whoaaaaa!!!! The design.... Love it!
I find some of the fonts are hard to read especially with the lighter colors :)
Attached a screenshot. I'm not sure if it has something to do with my eyes lol but I find the word StackExchange a little dark for me but it doesn't bother me at all because I can still read it.
Second is the font size of the links below when I click on the StackExchange dropdown. I find it a hard to read, It might be on my browser (Firefox 6.0.2) although I could still read it when I hold down ctrl + mouse roller up so I could see the font bigger.
It's not really a big deal thing, I'm just looking around for something that I feel I could contribute at least :)