Thing is, usernames of newbies who don't have many posts yet contrast very poorly with the forum's background color.
During the evening when it's dark here, they are not that hard to see, but when it is noon and bright I have to select them with my cursor to see what is written. And that does mean something, because everyone says I have a very bright screen. :P
So I would suggest to make the greyscale name colors a little whiter than they are now, for the sake of contrast.
That's it.