so i did a trial before i use my 36 color pastel set and did the colors of the rainbow. I like it but it would be beter if it was actually symetrical like kaleidoscopes are supposed to be. the coloring book i got it out of has false advertising. not sure what design I will put on it with glitter glue yet. i like this one the most of the others in the coloring book because it has three dimensional edges and I plan on getting another coloring book with the three dimensional geometric patterns and illusions in it.