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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.
NoMusicTuesdays
I guess what NoMusicTuesdays wants to say is, that physically LCD is a light covered by coloured filters that reduce the amount of light passing through, so physically speaking it's a substractive light technology. (Please correct me if I am wrong!)
Nevertheless. Displays usually are driven with "rgb technology" (meaning that the software controlling the display expects whatever inputs it received to be in RGB values). (Also I don't know, where I am going with this now...)