I'm not sure if you're adding to what I was saying or contradicting me, but either way, I believe we should be in agreement. Colors have positive and negative connotations way outside of race, they are contextually dependent (your accounting example is very nice, as black is positive while red is negative), and trying to police that is absurd and counter-productive.

I should also mention that I am aware that in Japanese culture (and I believe others in that area, but don't know for sure), the traditional color for mourning is white, not black.