warm colors and in cool colors. Remember from art class, warm colors are reds, oranges, and yellows. Cool colors are blues, greens and violets. Try to choose scraps/fabrics that have an obvious color feel to them.
This is what you'll end up with, four approximately 9" blocks. If you are in my bee group, please don't trim the blocks before you send them to me. If you aren't in my bee, by all means, make some more, trim them up and sew them together!