A cute little site for playing around with color themes and console fonts.
The O'Reilly newsletters says, "Like a new pair of shoes!"
http://app.programmingfonts.org/
I spend a lot of time in Linux consoles and vim, and really appreciate Solarized Dark and SourceCodePro, though I see a couple others worth checking out.
Note that you can type in the simulated console, which is important if you're checking out key characters like zero.