Novice here, sorry if I'm missing something obvious.
However, voltage is an issue, as each green or blue channel could need up to about 20V depending on the brightness I settle for. A DC/DC boost converter seems to be the way to go to get 20V bursts out of my little battery, but from what I know, I should drive LEDs by constant current, not constant voltage, in order to account for brightness variations and possible damage due to temperature rises. I was thinking something like the TPS61096A.
Should I use something else than a DC/DC boost converter? Or add something to it to control the current?