I am drawing graphs for a paper that supports only black and white graphs. I need to show more than 3 histograms and want to have different patterns on them like hash, dotted, double hashed etc instead of different colors in the legend.

I am using MS Excel 2007.

I tried but dont find a way except for the option available in design tab that I find when I double click on the chart area( These are shades of grey color and I want patterns like hashing, dots etc). Thanks in advance,