Define color-pallet

Hello,

I am completely new to the watch face game. For now it looks quite promising, but the first challenges I am already facing.

Currently I work on a first version with arc drawing. I would like to define a color-pallet and reuse the defined colors. Is there any way (for amoled watches) to define a list of colors and use it in monkey C? Someting like this:

The target is to do a central management of the used colors.

Thank you so much :-)