Ive seen people do it in other cars, It looks alright I guess. Just dont go over board and starting getting those string light things and wrapping em around everything.
Here is a pic of a prelude with blue leds in his console and other stuff.
EDIT
everytime i try to attach the pic, and click reply, the location dissapears, so umm use your imagination
everything is blue, cept the heater part thats supposed to be red.