What I do is I created an excel sheet, with each palette named (Palette 1 Purples, 2 Pinks, 3 Oranges etc) and then I color code them (in a bright bold font) and print them out. Then I glue em to the inside of the palette, so I know exactly which color Im using. I have I think 15 palettes now so I keep reorganizing them. I also tape on the front a piece of paper with Pinks, Purples or whatever colors are in it written on it, and then a piece of tape over it.