I used Crayola paint last year. You cannot mix a true violet with the red
and blue. It drove me crazy. I would never order it again. Instead we
used RichArt and that was fine. It's tough enough to teach kids to mix the
3 secondaries and 6 tertiaries without dealing with that problem! Who needs
more stress than we already have?!! It really confuses the kids because
they expect violet and, therefore, think they've done something wrong when
they cannot achieve it.