Makes several custom color definitions, utilized by the floor painter, floor tiles, decals, etc.
Colored floor turfs now use a white icon state and applies a color, similar to the corresponding decals. This ensures they have the same color tone (was slightly off previously).
Colored floor tiles also use a white icon state and color application.
Removes now unused item states.
This should have little/no gameplay effect right now, just paving the
way for directional lights.
Replaced handle_rotation() on buckly things with this.
Signed-off-by: Mloc-Argent <colmohici@gmail.com>
