I think every After Effects user at some point or another has looked for or wanted a color swatch panel. Well the answer is here with colorLibrary. This not only allows you to store, import and export color swatches but you can also extract colors used in any composition.
Currently this is on sale for $19.99 but the sale ends June 16, 2013 and the price goes up to $29.99.
Find out more at: aescripts.com/colorlibrary