Right now there are 80 levels and I've done all but 5. My mistake was taking a break. You really need to do these non stop - methodically.
(My grandfather's brothers were in the stencil business. They created stencils for toys so that when they needed to paint certain parts, the colors would be correct. I think they would have liked this game.)
Big thanks to Loyal Blog Follower David Cole for informing me of this little gem.