I made several of these little color soft books based on this tutorial a few years ago for a charity event. Thankfully, I saved one not knowing for sure if there would ever be another little one in our family. It sat, undone, for all those years, but now it is done for Joe to enjoy.
It includes several pages, two of which are pictured below. It includes the rainbow and then pink, brown, black and white.
The words were printed in reverse on iron-on transfer paper and then ironed onto a square before being stitched into a four-patch.
Now Joe can learn his colors . . . or at least have another tasty book to chew on.