DD, I have Rainbow Frost, Rainbow Jewels, Touch the Rainbow, Rainbow Forest, Rainbow Taffy, Rainbow Magic, Rainbow Bright, and Rainbow Confetti. And the pattern is call The Confetti Quilt to make up a couple of the packets into, at least originally. Packets are several years old, not new.
I might try to work in about three or four packets, a more intense color with a lighter shade since there are 12 blocks. The dark pieces can work in where they need to be and I can 'play' with the lights the same way. Background will be a Kona Creme or Butter...letting the blocks shine on their own rights.