I decided to return to the 'black' background for my blog. the colored fonts look like little Christmas lights. I had it printed in yellow on green for a long time because I read somewhere that this was very readable on a computer. I think dark green type on a light green background would be really readable, and not so far off from what people expect. But as I said I like the colors against black and the Texture behind the header fades to black edges. I like the effect. I'm still trying to work with the format that allows swapping in 'gadgets' from google. some of them, like FriendFeed, sort of clash with anything but icy blue and white. Against black the little windows seem disembodied. which seems OK right now.