Welcome to BLF!
Were you aware you posted in a sub-forum for lights one wears on one’s head?
Terminology contentious, for sure.
I’d have thought a car or electronics forum might be a better fit? I rarely see vehicle lighting discussed on here, we mostly power things with 1+ 3.7V cells.
I’m imagining a Audi style “chaser” indicator, plus ability to go white in reverse, this doesn’t seem extraordinarily complicated, are there no existing products already? I would assume it would be easier to modify something that already exists than to start from scratch.