[TxMt] Change colors for diff output

[Chuck Esterbrook]

TextMate colors the output of a diff (such as "svn di") which is
great, but I would like to change the colors. For example, I would
prefer that deleted lines are red on white instead of white on red (I
find the background color distracting).

I didn't see an entry in the TextMate Preferences for these. Am I just
missing it? Or can I change these via the defaults database or a
plist?

Thanks,
-Chuck