and, as i always do with these threads, i'd like to put my vote in for an entire black, white, and drab option so i, at least, can leave the whole happy Lego vibe completely behind.
keep the white sequencer though. you still need to see fake LED's n stuff so keep the lights red or something.
though actually, if any of you lot are on a Mac you can get an app called Nocturne. it allows you to, among other things, switch your whole screen to black and white. which is mostly useless but then so are most things i guess.