A lot of painters have strong opinions about whether or not it is
helpful to premix colors on the palette before painting. I’m not
talking about making your paints from scratch but rather about mixing a
few colors, or even just one, after you’ve identified what the main
colors in the work are going to be. Then, you don’t have to remix those
colors during the painting process. For example, if you are painting a
still life with green apples, at the onset you could mix a large
quantity of the green you’ve decided to use so that you have it in
reserve throughout the process. I don’t have strong feelings one way or
the other on this, but here are some of the pros and cons of premixing
your colors:
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