Most of these are the same colors, I try to stay mostly neutral with a few fun colors. I get pretty much everything in white and grey/black. My favorite color to wear right now is brown/cream so I will get a few items in those colors. For shirts, I also like to have one or two fun colors.
Pants are the easiest. Get 2-3 pairs of jeans and 2-3 pairs of other pants/skirts!
Allow yourself 2-3 purses, 1-2 belts, and 3-4 pairs of shoes.
This is where I have the most fun. Get some statement pieces! Get some simple pieces!