Hey, thanks for posting. Looks interesting though a bit distracting. When I first started looking for and messing with themes I came across one that had a pretty good idea behind the styling. It had a palette ranging from dark to light and the importance of the element being styled decided how bright or dark it would be styled as the eye is naturally drawn to things that are brighter.
Dominion Day is another low contrast theme which puts color theory to work for the maintenance coder. Analogous shades coax your eyes into focusing on the parts of your markup which tend to have the greatest visual impact for the end user. Sure, those DIV tags are important, but once typed you rarely need visit them again. Their attributes might be edited slightly more frequently, so they command a bit more attention, with executable code and the text which is actually drawn to the screen being the most visually pronounced elements. Absolutely no bolds, italics or underlines.
You can find that theme at: http://wiki.macromates.com/Themes/UserSubmittedThemes
. Scroll down to Dominion Day to get a look at it and the basic idea behind it.
Perhaps you could mess with your theme and make it a bit more usable, but if you're happy with it that's all that matters.
Feel free to post a link to download it and I'll add it to the list :]