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• Unable configure brightness or colors (12.04)

  - by bux

  I've make a fresh install with Ubuntu 12.04. Unfortunatly i've a problem with colors and brightness settings. Before reinstall of Ubuntu, i used Ubuntu 10.10 with same graphic card, and same nvidia drivers. Note: Only nvidia proprietary drivers works for my GeForce 8600 GTS. Exemple: With nvidia-settings: adjust colors, brightness: no effects With xgamma -gamma 0.5 : no effects Try to use f.lux or redshift: no effects I try solutions found on internet like here but no working to. Any idea ?

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• urxvt bold colors are wrong - bold #0-7 are using colors from #8-15

  - by Nate

  My colors are off. Specifically, the bold version of colors 1-6 is broken: The color of each (emboldened) index should match the color of the text beside it. It does not. This is generated from this gist, modified to enumerate colors 0-15 instead of 16-256. Update: Here's what's going on: Bold #1 is using color #9, bold #2 is using color #10 and so on. I confirmed this by changing color9, color10, etc. in my .Xresources file. I'm using solarized .Xresources and would rather keep colors #9-15 colored differently. Why is urxvt Bold #0-7 using colors from #8-15, and how do I stop this?

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• Are web-safe colors still relevant?

  - by Gavin Miller

  Since the vast majority of monitors are 16-bit color or more, including mobile devices, does it make sense to even consider web-safe colors when choosing color schemes? Or is it something that ought to be relegated to history as a piece of trivia? For those of you that don't know what web-safe colors are: Another set of 216 color values is commonly considered to be the "web-safe" color palette, developed at a time when many computer displays were only capable of displaying 256 colors. A set of colors was needed that could be shown without dithering on 256-color displays; the number 216 was chosen partly because computer operating systems customarily reserved sixteen to twenty colors for their own use; it was also selected because it allows exactly six shades each of red, green, and blue (6 × 6 × 6 = 216). The list of colors is often presented as if it has special properties that render them immune to dithering. In fact, on 256-color displays applications can set a palette of any selection of colors that they choose, dithering the rest. These colors were chosen specifically because they matched the palettes selected by the then leading browser applications. [Wikipedia]

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• How can one make vim change terminal colors?

  - by amn

  I am using command line vim running from an xterm (which runs sh). I have color in vim according to a color scheme I like. The problem is, as usual with 256-color terminals and truecolor color schemes, colors are wrong. Now, I know I can do a gazillion things to fix this, including installing gvim, but I like my terminal. In fact, using xrdb [-merge] .Xresource file, I now actually have xterm override the color values, and the theme now looks perfect. Since, I may be switching to another theme, I need some workflow to have vim actually do what xrdb does - to reset terminal color pallette. Because right now I have to reset color values with xrdb ... first, then launch another xterm to actually use these values, then launch vim from that newly opened xterm to have the exact colors. The way I understood it is that vim color scheme, just as any other terminal application, uses colors by referencing their ids, and X resources set the values themselves. I think I saw somewhere on Internet, that terminal control character sequences can reset actual color values, in fact, I am sure they can - I managed to set my terminal background color at runtime. How would I make vim execute these sequences to match values for the color scheme? And is there any reference to these control sequences, as part of any standard?

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• 256 Colors in Terminal over SSH on OSX 10.6

  - by user1104160

  I am using either Windows 7 or Ubuntu 12.04 and trying to SSH into OSX 10.6. Using Vim color schemes, I can emulate the colors on xterm-256 color on Linux and gVim on Windows. However, I would like the colors to follow through when I am SSHing onto the OSX. The default terminal, however, does not support xterm-256color. Is there a way to have OSX use iterm2 by default, to accept all SSH requests instead of terminal.app? If not, is there a way to install xterm-256color into the default terminal? Upgrading to Lion is out of the question at this point. Thank you!

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• "Reset" colors of terminal after ssh exit/logout

  - by dgo.a

  When I ssh into a remote server, I like the colors of the terminal to change. I use setterm on my remote ~/.bashrc file to get this done. However, when I exit, the terminal colors are not reset to the local ones. I solved the problem, but I am not sure if it is the best solution. This is what I could come up with. On the ~/.bash_logout on the remote server, I put: echo -e "\033[0m" /usr/bin/clear Just out of curiousity: Does anyone know of a better way? (I got the echo -e "\033[0m" line from http://edoceo.com/liber/linux-bash-shell)

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• Iphone colors calendar

  - by juanpablo

  Hi, I use microsoft Exchange to sync google calendar with my iphone, but I don't like the color of this calendar in iphone, how I can change the calendars colors in the iphone ? Many thanks.

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• Adjust Mac OS X's colors

  - by Seth

  I downloaded an app several months ago for the Mac that enabled me to adjust the colors of the monitor to work with different light sources. There was a filter for daylight, incandescent, fluorescent, etc. After re-installing I can't seem to locate it again. Does anyone know this application? UPDATE Never mind, after all that Googling and asking here I found it. It's called Flux http://www.stereopsis.com/flux/ Highly recommended if you have any eye strain.

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• Enable colors in Ubuntu Server linux terminal.

  - by b3ng0

  One of my dev machines is an Ubuntu server installation with no X/gui/etc. It just boots to terminal. Can I enable 256 colors here? How?

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• Powershell not displyaing Unix colors

  - by Paul Nathan

  I use various Linux programs on my machine; some of them have colorized output. However, Windows Powershell does not support Linux colors; it get a message like so ?[0m31m(which is the color control code), and renders that instead of the color. Is there a way around this?

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• Default Textbox Colors in Powerpoint 2007

  - by Ben

  How do i change defalut colors for a new Textbox in PowerPoint 2007? I am using a custom themed presentation template that someone gave me and every time I create a new text box it is white text on white background.

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• Invert bitmap colors

  - by Alex Orlov

  I have the following problem. I have a charting program, and it's design is black, but the charts (that I get from the server as images) are light (it actually uses only 5 colors: red, green, white, black and gray). To fit with the design inversion does a good job, the only problem is that red and green are inverted also (green - pink, red - green). Is there a way to invert everything except those 2 colors, or a way to repaint those colors after inversion? And how costly are those operations (since I get the chart updates pretty often)? Thanks in advance :) UPDATE I tried replacing colors with setPixel method in a loop for(int x = 0 ;x < chart.getWidth();x++) { for(int y = 0;y < chart.getHeight();y++) { final int replacement = getColorReplacement(chart.getPixel(x, y)); if(replacement != 0) { chart.setPixel(x, y, replacement); } } } Unfortunetely, the method takes too long (~650ms), is there a faster way to do it, and will setPixels() method work faster?

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• Inverting colors of a PDF

  - by legr3c

  I need to invert all the colors of a PDF document (background, text, graphics, and images). I want it persistent in the file so the inverted viewing options, that some viewers offer, won't help. Rasterizing the document and using image manipulation software is also not an option. I read somewhere that this can be done with the Enfocus PitStop plugin for Acrobat. However I didn't see a corresponding command anywhere. Am I missing something? Then I read that the ARTS PDF Crackerjack plugin for Acrobat offers negative printing so I tried that, too. The option is there but it simply doesn't work. I have been searching for very long for a way to do this. It seems like a common enough task but I just can't find out how to do it. Are there maybe any virtual printer drivers or something of the sort that support negative printing? Can anyone help?

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• emacs, colors in term-mode

  - by valya

  Hello, I use Emacs and I run bash with M-x term command. There is a problem: colors in the *terminal* buffer aren't the same as in Gnome Terminal, and they are worse (do you need a screen shot?). How can I fix this? This is pretty annoying :-) Thank you! Linux Mint 9 Emacs 23.1.1 x86_64 __________________ /home/valentin/Work/buzzoola/buzzoola/test/vagrant [.../vagrant]$ echo $TERM eterm-color __________________ /home/valentin/Work/buzzoola/buzzoola/test/vagrant [.../vagrant]$ echo $LS_COLORS rs=0:di=01;34:ln=01;36:hl=44;37:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31 ;01:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31: *.arj=01;31:*.taz=01;31:*.lzh=01;31:*.lzma=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.dz=01;31 :*.gz=01;31:*.bz2=01;31:*.bz=01;31:*.tbz2=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01 ;31:*.rar=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.jpg=01;35:*.jp eg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;3 5:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.p cx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.ogm=01;35:*.mp4=01; 35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm =01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv=01;35:*.gl=01;35:*.dl=01;35:* .xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.axv=01;35:*.anx=01;35:*.ogv=01;35:*.ogx=01;35:*.aac=00 ;36:*.au=00;36:*.flac=00;36:*.mid=00;36:*.midi=00;36:*.mka=00;36:*.mp3=00;36:*.mpc=00;36:*. ogg=00;36:*.ra=00;36:*.wav=00;36:*.axa=00;36:*.oga=00;36:*.spx=00;36:*.xspf=00;36:

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• Thumbnail generation with imagemagick doesn't render the correct colors

  - by Bastien

  Generating thumbnails of PDFs with imagemagick sometimes renders incorrect colors. We're using an old version of imagemagick (6.5.7-8, that's the version installed on the heroku servers). Here is the command we're currently using: convert -size "725x1200>" -colorspace RGB -flatten -density 300 -quality 100 input.pdf output.jpg I've tried using different colorspaces like sRGB,YIQ,.. but none of them are rendering the color correctly. Using imagemagick-6.7.7-6 locally works so I've tried to bundle the 'convert' command within my application /bin directory, the command works but the result is still wrong, so it seems that the problem comes either from another imagemagick command used by 'convert' or from another library. Here's an example of the outputs: Correct output: http://i.stack.imgur.com/gf9eG.jpg Wrong output: http://i.stack.imgur.com/imUeD.jpg Strangely, with some pages of the same pdf the output is always correct. Any idea which library or command could be the issue, or if there is a proper set of options to pass to imagemagick to always get it right? Thanks in advance for your help.

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• Sorting a list of colors in one dimension?

  - by Ptah- Opener of the Mouth

  I would like to sort a one-dimensional list of colors so that colors that a typical human would perceive as "like" each other are near each other. Obviously this is a difficult or perhaps impossible problem to get "perfectly", since colors are typically described with three dimensions, but that doesn't mean that there aren't some sorting methods that look obviously more natural than others. For example, sorting by RGB doesn't work very well, as it will sort in the following order, for example: (1) R=254 G=0 B=0 (2) R=254 G=255 B=0 (3) R=255 G=0 B=0 (4) R=255 G=255 B=0 That is, it will alternate those colors red, yellow, red, yellow, with the two "reds" being essentially imperceivably different than each other, and the two yellows also being imperceivably different from each other. But sorting by HLS works much better, generally speaking, and I think HSL even better than that; with either, the reds will be next to each other, and the yellows will be next to each other. But HLS/HSL has some problems, too; things that people would perceive as "black" could be split far apart from each other, as could things that people would perceive as "white". Again, I understand that I pretty much have to accept that there will be some splits like this; I'm just wondering if anyone has found a better way than HLS/HSL. And I'm aware that "better" is somewhat arbitrary; I mean "more natural to a typical human". For example, a vague thought I've had, but have not yet tried, is perhaps "L is the most important thing if it is very high or very low", but otherwise it is the least important. Has anyone tried this? Has it worked well? What specifically did you decide "very low" and "very high" meant? And so on. Or has anyone found anything else that would improve upon HSL? I should also note that I am aware that I can define a space-filling curve through the cube of colors, and order them one-dimensionally as they would be encountered while travelling along that curve. That would eliminate perceived discontinuities. However, it's not really what I want; I want decent overall large-scale groupings more than I want perfect small-scale groupings. Thanks in advance for any help.

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• Calculating the average color between two colors in PHP, using an index number as reference value

  - by Roel Krottje

  Hi all! In PHP, I am trying to calculate the average color (in hex) between to different hex colors.. However, I also need to be able to supply an index number between 0.0 and 1.0. So for example: I have $color1 = "#ffffff" and $color2 = "#0066CC" .. If I would write a function to get the average color and I would supply 0.0 as the index number, the function would need to return "#ffffff". If I would supply 1.0 as the index number, the function would need to return "#0066CC".. However if I would supply 0.2, the function would need to return an average color between the two colors, but still closer to color1 than to color2.. If I would supply index number 0.5, I would get the exact average color of both colors.. I have been trying to accomplish this for several days now but I can't seem to figure it out..! Any help would therefor be greatly appreciated!.. Thanks!

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• Changing system colors for a single application (Windows, .NET)

  - by Michal Czardybon

  I know I should generally avoid messing up with such system settings, but my application do already use nonstandard colors and I have no influence on that. I would like to be able to add standard .NET controls in some places, but their colors do not match. I would like to have a hack that would replace system colors for this one application. One more important thing to note is that it is a .NET application. My (incomplete) ideas so far were: To create a proxy User32.dll library with replaced GetSysColor, but it would be very tedious (731 functions to be redirected, 1 to be replaced) and I do not know how to force my application to use that particular copy. To intercept somehow invocations to GetSysColors (unfortunatelly it is somewhere in the CLR I think). To modify somehow .NET class SystemColors (in memory? is it possible?). Do you have any idea, what is the best (and complete) way to achieve this?

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• How to retain background colors when pasting between documents in Excel

  - by Iain Fraser

  I have a script that programatically generates excel spreadsheets - cleaning up ugly reports that are given to us from another organisation. For interests sake; I'm using PHPExcel to generate the "clean" reports. We get these reports every week for an event that happens every couple of months. The reports contain a list of attendees along with a group id that allows us to know that some attendees belong together. To help the event organisers out, I've taken the event ID and generated a unqiue color code (based on the hash of the event ID - truncated to 6 characters). This unique colour code is set as the background color of a cell in each row. This helps organisers quickly visually identify group members. Trouble is, when the organisers copy the rows from the weeks report into the master report (which contains all attendees, not just the ones that signed up this week) - all the colour-codes snap to the master template's color pallette. Thank you very much for your time All the best Iain

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• Add colors to gif palete gimp

  - by Tomáš Zato

  When I open a GIF file in gimp, I find it very hard to add more colours then those that are already contained in GIF palette. When I draw with different colours, GIMP is trying to use the colour from palette most approximate to the colour I'm drawing. (may result in red instead of black) This problem persist even if I save the imported GIF as XCF file (even if I create new layers in it). How do I make gimp ignore the palette? The only solution was saving (exporting) the file as some non-palete image as BMP and then importing it again. Example : After flood fill (black)

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• Understanding colors

  - by Ankur Gupta

  Hello everyone, Kindly point towards theory/material to read for understanding colors and what makes a good color combinations. Mind it that I am not interested in say "Color combinations for web application" etc. More of the lines of say "Colors and humans". Material free to read is what i am looking for. Thanks

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• Flex Chart Colors

  - by maoanz

  When creating a flex Chart, the list of colors is always the same, something like (orange, green, blue, ... ) I imagine that the Flex Charts use any array of default colors, Is there a way to get this array ?

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• Output redirection still with colors in PowerShell

  - by stej

  Suppose I run msbuild like this: function Clean-Sln { param($sln) MSBuild.exe $sln /target:Clean } Clean-Sln c:\temp\SO.sln In Posh console the output is in colors. That's pretty handy - you spot colors just by watching the output. And e.g. not important messages are grey. Question I'd like to add ability to redirect it somewhere like this (simplified example): function Clean-Sln { param($sln) MSBuild.exe $sln /target:Clean | Redirect-AccordingToRedirectionVariable } $global:Redirection = 'Console' Clean-Sln c:\temp\SO.sln $global:Redirection = 'TempFile' Clean-Sln c:\temp\Another.sln If I use 'Console', the cmdlet/function Redirect-AccordingToRedirectionVariable should output the msbuild messages with colors the same way as the output was not piped. In other words - it should leave the output as it is. If I use 'TempFile', Redirect-AccordingToRedirectionVariable will store the output in a temp file. Is it even possible? I guess it is not :| Or do you have any advice how to achieve the goal? Possible solution: if ($Redirection -eq 'Console) { MSBuild.exe $sln /target:Clean | Redirect-AccordingToRedirectionVariable } else { MSBuild.exe $sln /target:Clean | Out-File c:\temp.txt } But if you imagine there can be many many msbuild calls, it's not ideal. Don't be shy to tell me any new suggestion how to cope with it ;) Any background info about redirections/coloring/outpu is welcome as well. (The problem is not msbuild specific, the problem touches any application that writes colored output)

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• PHP - Rotate a HEX color value (eg swap all colors with "next" hex)

  - by Joe

  I have a set of hex values in an array in PHP. On my page, I have a slider which the user can "slide" to return a value between 1-100. I want to then, based on this slider value, swap all the colors in the array based on the colors "next" color based on the position in the array. An example of the same sort of thing would be like in photshop where you can rotate the hue of a layer. I want to do the same thing, in PHP, for a hex value. Any clues?

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• Mix RGB colors (L*a*b*)

  - by Samuel

  Hello! Basically I want two mix two colours color1 and color2. Since simple calculation's bring up stuff like blue+yellow = grey ((color1.r + color2.r)/2 etc) i did some research and found that apparently mixing colors in order for the mixed color to look like we expect it too (e.g. blue+yellow = green) isn't that straight forward. What another stackoverflow post taught me was that in order two achieve the mixture correctly i'd have to use the L*a*b* space / CIELAB and linked to the wikipedia page about this topic. I found it informative but i couldn't really understand how to convert RGB to (sRGB and than to) L*a*b* - how to mix the obtained colors and how to convert back I hope somebody here can help me Thanks, Samuel

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