I'll sort that out at some point
maybe I'll add it to the random golf of the day
there is a challenge with "random" and "color" in the title, but the challenge isn't much about randomness
alternatively, colour space conversion would be an option
or something more interesting, where you could use the colour space as an actual 3d space and so something like random walks or whatever...
my point was just there are a lot of possibilities and it doesn't seem like they have been explored very thoroughly on PPCG so far
another idea would be averaging in colours in various spaces