No, I'm afraid there is nothing built-in for this. The colour is RGB565 so you can decode it like this though:
r = (col>>11)&0x1F; g = (col>>5)&0x3F; b = col&0x1F;
@Gordon started
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
No, I'm afraid there is nothing built-in for this. The colour is RGB565 so you can decode it like this though: