The Rainbow Book and Song

I came up with the idea as a book while singing the song as a lullaby to my grandbabies then turning it into a fun activity. This book is about the colors of the rainbow.. it's educational and teaches children the basic colors like red yellow orange etc... It also teaches them in the song hand and eye coordination while singing along with the song... My goal for this book that when the children see the rainbow after it rains they will say the colors and sing the song...