Got a muddy brown? You added too much blue (or too much yellow). Correct it with a small splash of the other color.
Is it too bright? Knock it down with a microscopic dot of red—it will gray the green into a chic olive. But go easy, or you’ll end up in brown territory again.
Remember: every mistake teaches you something. There is no wrong green, just a green that leads you to the next one.
