New LED effect? Fingering colours + breathe

Continuing the discussion from First time flashing - RGB speed overly increased:

The LED effect I have in mind is like LEDBreatheEffect except instead of a single solid colour I want to set up sets of keys intended to be hit with the same finger as quasi-vertical patches of rainbow colours from LEDRainbowEffect and I want them to breathe in and out…

… with an interesting option being that each time or every n times it breathes, each patch colour is shifted to the next.

Would be a colourful way to help people get proper fingering on the M01 IMO…

Probably people like @algernon can whip this up with hardly any effort… [hint hint :wink:]… :bouquet::bouquet::bouquet: