I like it! But like you, I have trouble seeing the layers. Also, my cursor flickers so badly I waste alot of valuable time waiting for it to appear to see if I am yet over the correct tile. And sometimes, I think I am, but due to the flicker I have inadvertently picked the wrong one.

But it's still fun, so I will continue to play it! I played the medium about four times and still did not beat it.