I cited the case of an argument color already in the text for Zig... in fact, that's conditionally a color depending on what is passed, which is even more sophisticated then an argument merely being unconditionally a color.

What some people want to do is call every argument a "color", that is, I changed this function to have to take a Username and now it's Username-colored is the claim. I supposed I should have made that more clear. This provides a definition where that is not the case.