Refactor colors

Colors used to be just ints which would index an array, now they're actual
color objects.

This enables us to more easily add different color schemes.

Two extra color schemes (focusing on different types of color blindness)
have been added, but are not in use yet.
Move busy into hexacube
Added options scene

Added option to change the current color scheme
Merge pull request #43 from pR0Ps/color_options

Option of using different color schemes