Mark often says that when you're color checking and and the source color is darker than black, then, of course, you just use black -- you can't get paint darker than black.
My question is if you have a black background, say, and part of it is darker than black and the rest is pretty much the same as the black you've mixed, how do you differentiate?
If, for example, you have folds in a black material and the shadows cast by the folds are darker than black and the folds themselves look black how do you show that with just one black.
I thought of perhaps lightening the black a bit for the black that's not blacker than black. But what happens then is that if I try to lighten a bit with yellow, I get a greenish tint (my black is ultramarine blue and burnt umber), and if I try to lighten with white, then it gets milky.
What are some of the ways that you all deal with this question? Thanks!