I got obsessed with making spirals of various sorts. And then, of course, I had to add my usual frills like circles and generative color changes. But always in the same palette, apparently! Even I admit it is getting old. But it has sort of become my default to use, so I don’t have to spend time thinking of what colors to use.
If I recall correctly, I made the red and blue levels defined by the sine and cosine of the previous distance between the two points (respectively), whilst the yellow level is defined by the distance divided by 500 or some big integer. Which is why the red and blue oscillate back and forth predictably whilst the yellow doesn’t seem to do much and then all of a sudden: WHOA! Pastel! The maximum number of iterations is 500, so that’s how the yellow stays less than or equal to one.
I have another version where the yellow level is a constant, but I like the weird pastel edges here.