i think thats a great idea, especailly for the map lights up in front and the vanity mirror lights. i wonder how it looks.
i'd go for some dark blue ones.. and then wire them so they slowly light up.. heheheheh. i think the novelty would wear off in a about a week and then i'd be cursing at them digging for something at night and them not really providing any light at all. still... i could put a little disco ball hanging from the rearview..