I suggest adding Black and White color changers. They shouldn't be pickable at the knight creation, nor at the misc. vendor at the Bazaar, but instead rewarded for completing tasks like this:
White, for reaching the Sanctuary?
Black, for completing all danger missions?
The thing is, a lot of the players who I have talked to (and me myself) want a black or white color changer. So, why not?
+1.