From someone who is stalling out on color combos:
What are your colors? How did you pick them? How do they represent any theme you have? Did you have religious requirements for your colors? How do you decide about what color goes where? Are your colors "offbeat"?
I'm looking at an Ivory/Gold/Purple/Green combo, but I realize now that I have no idea if it will look good or look too "one way" or too "other way". I'm starting to feel my wheels spending under me!