this website. There is oodles of more information here. It takes your natural coloring and gives you recommendations for what colors and palettes best suit you. Great for clothing and makeup selections! I'm going to print a 4x6 of my suggested palette (cool summer) and laminate it and keep it in my purse. Hoorah!
PS - Here are a few more "cool summer" swatches I found. I'll put them here until I have a chance to print them later. I'm fairly certain I'm a cool tone now. How do I know? This morning my lips were blue. Blue. It didn't wash off, either. Yup, blue lips. Pffft.