There you go, Bush... The come-back I looked for.
My post was to cause thought re alternate ways. Sometimes the best way is to totally set one way aside & try another, fresh concept. Now, I admit that most artists mix combinations of colors and create "greys" as they're poorly being called here. I myself usually do so with opaque paints but never with W/Cs. Never. Why? Because the lightening element is the paper so my colors must be mixed from 2 or 3 pures, no white. Also, to increase interest I want the color mixes to shift within areas - not only from various warms & cools but contrasts, intensity, etc. For that to happen I overlay colors in separate washes, manipulating with various tools as it moves & dries. To mix all those colors into a single "grey" & try to get the same effect would be ludicrous.
On the "out there" side of my suggestion, I know several painters who use pure, bright colors in this way and their paintings are incredible... Full of life, interest, brightness - not as drab as mine tend to be.