I asked myself the same thing, and my first thought was that the puzzle would be hard for the player to read. Those were the two most important problems with it:
- If the player colors a square red when it should be green, how can the player see this without getting confused?
- If the player colors a good square, how does he know he's colored a good one?
I didn't have any good ideas for how to solve these two problems, so I went with the other, safer idea. But if you have in mind something that could solve these problems, I'd love to see a picture of it
On the other hand, it gives me another idea, which is to put the color of the squares to be filled in on the edge. This would make it possible to put the final goal right on the puzzle. Thanks for making me rethink that