The Empire is...rather monochromatic in its color schemes. Its kinda boring really. The Royal TIE and the lone Interceptor ace TIE offer the only stock variations. So, going with a minimalist type of approach, I just repainted the cockpit frames and a few other odd bits, including the rear cockpits on all but the already red Royal TIE.
They look good I think, and they stand out in the crowd when we play our (quite frequent) 300 point slugfests. Speaking of, we played such a game Saturday night after some last minute substitutions...and rather than rehash that game (especially as I lack any photos of it), Kushial posted a battle report here.