But, as per usual, I did not read the directions very thoroughly. For the purple and most of the pink, I separated the provided thread into three separate strands and I stitched with one of them at a time. Had I read the directions, I would have seen that I was to separate them into two threads and one thread and then I would have stitched with the two thread grouping.
Also, I don't like those splotches of blue on the rainbow. They are supposed to be birds. I think they suck, so I am stitching over them. With two stitches you can't see their outlines, so that's good. I should really learn to read the directions all the way through.