Unpopular design opinions:
I don't really like complementary color schemes that much. Yellow and purple don't look good together to me, except if done exceptionally well, red and green are too associated with Christmas, and blue and orange are far too overused by every movie poster ever.
However, *complimentary* color schemes are very good.
Red: You are looking beautiful today!
Blue: Why, thanks Red! That cadmium pigment looks great on you!