The color for the rainbow challenge in February is green. When I started pulling green 2.5 inch squares from the box, I thought boy do I have some ugly greens. I am not sure where they all came from but boy are they ugly. That is not to say I do have some greens that I really like, there are just not that many in the box. But when you put them all together in the block I have chosen for the challenge they don't look half bad.