http://www.toribash.com/colors.txt

Here you can see the RGB colors of the joints.

Example
Void: 0 0 0 (using no colors, completely black)
pure: 255 255 255 (using all colors in max scale, 255, completely white)
platinum: 128 128 128 (grey, between black and white)

You can create a color palette of these RGB colors.
RGB = red green blue