Ok I can suddenly enter the red square, although I'm 100% sure I couldn't earlier. It's possible the invisible walls that kill you don't give quite enough space, which would make it seem like the square is unenterable.
Well it contains all 3 primary colors and all 3 combinations of 2 primary colors. I still cannot walk onto a single colored square. You should test it.
The only issue is that depth perception is very tricky. I thought the game was just failing to register that I was passing through coins for a while, but then I realized you can move up and back. Even after realizing that, it was still tough to tell which path the coins were on.
@ Darkruler2005:
No, the save system does not work "perfectly fine". It is a system in which not exiting after saving causes your file to DELETE entirely. That is not fine at all.
Well I had rated it 4/5, but now that I come back the next day to find that my save file has been deleted for no apparent reason, I'm lowering it to a 1/5. What kind of rpg doesn't allow saving -_-