Color Palettes help you organize colors into meaningful groups. There’s no limit to how many colors a Palette can hold, but you can’t have duplicates in the same Palette.When a Palette is selected, new colors you pick are added to both Color History and the selected Palette. A checkmark identifies the selected Palette.
Drag and drop colors within a Palette to rearrange them, or drag colors between palettes to move them. To copy a color instead of moving it, hold ⌥ while dragging.
Normal drag moves colors. ⌥-drag copies colors and leaves the original color where it was.