I see your point about the larger fonts but I have used the sunburn theme for a while in my editor (not anymore thought in favor of slightly customized naquadah[1] ) and I feel quite a bit more comfortable reading code in familiar coloring.
I chose this color scheme because sunburn dark is quite popular.
[1] http://rvfblog.wordpress.com/2011/03/07/using-naquadah-theme...