the color of walls level 8,9,10
I think nothing but the color of walls between 9 and 10 should be changed
here is the reasoning behind my thinking
grey walls are already been used on lower level walls
level 8 walls ( skulls ) is black
level 9 is a gray
level 10 is gray with a slight change to graphics,
so you got black to grey to grey
I don't think any other stats or the shape graphics should change just the color between level 9 and 10
hey super you took away the pretty blue how about use that color to create a difference between level 9 and 10