You need to bridge the two spaces that look like warp points with the body of your SNEK. You have to go through them both vertically, or else you'll hit the wall to either side of them.
All I could do in the COLOR ZONE was to change the color of my 'snek' but it resets the moment I die. Have I maybe missed something in the MYSTERY ZONE?
It seems you're missing 7 letters. Have you missed the "DUNGEON OF THE CAVEMEN"?