ChrisKempson/Vim-Tomorrow-Theme — pull request #12 by Raynes (2012-01-18 00:44:49+00:00)
Title: Change paren match highlighting

I think these are optimal colors. I took them from Emacs (though they
were already being used for other things, so I didn't go outside of the
pallet of course. The old colors made matched parens impossible to find
in a large text.

These are just colors that I grabbed and threw in and they look pretty good to me. However, if you've got a better idea for the colors, by all means change them. All I ask is that they be bright enough against the background that you can pick them up.