I've recently upgraded Mozilla Thunderbird to v3 on Winodws XP. In v2 I think when new (Pop 3) emails were downloaded, there were a little star icon next to my local folders where it's filtered to as to indicate new emails. In v3, it seems they've changed it to use different colour to highlight the folder instead. Whereas folders with existing unread emails are highlighted in bold black, folders with new unread emails are highlighted in this light grey greenish colour that's really hard to see.

Can anyone please tell me how to modify the colour? I'm guessing it's either some lines in a userChrome.css file, or modifying a field in the config editor.

Thanks. :)