I had some heinous green enter my blog. You'll still see it upper left in the sidebar. I couldn't figure out, at the time, how to fix it. Tonight, I guess my brain had cooked it enough (for many, many months), because the solution took about 2 minutes.
Here's how it HAD looked, when I first came upon it:

And here's the fixed version, for posterity, because I will undoubtedly be tweaking:

There's still a box of green. I shall have to find that in the CSS somewhere.
This reminds me. Figuring puzzles out is COOL!