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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.
@andrewg_oz
I'm not aware of CMYK displays. Maybe actual e-paper displays that default to white and need to subtract colours to work (like actual paper and printing). I think we're mostly likely to get an upgraded display via the 64-colour one I found, since it's basically exactly the same as the current one, except for the extra colours.