How to create a color palette?

[gritty]

When I am painting with oil paint I create a color palette of the colors that I am going to
use in the painting and then use those colors (more or less) in the painting.

Is there a way to create a color palette similar to the Brush selection
palette but with squares of color?

[jonnor]

One way of doing this is simply using an area of your canvas. You can also try Ilya Portnovs branch, it has a color palette tool.
http://wiki.mypaint.info/Iportnovs_en