I prefer pastels -- pale blue, lilac, pink, and so on. Black is fine for shoes and purses, and white is okay for blouses, but otherwise I avoid them. "Little black dresses" are cute, but they're not my favorite. I also avoid bright or saturated colors like red, navy, green, etc.
And I agree with Genevieve: Pink and gray go well together, as in a pink blouse with a gray skirt & jacket.
Oh yes, I do go for black skirts with bright jewel-tone tops, at least occasionally.