Thanks to my partner on the project, Filmulator has new builds going (it’s currently still running here) and with a new feature: highlight channel crosstalk.
On many images, when a highly saturated color is blown out, Filmulator turns it a really ugly color. This happens often with blue, and occasionally with red.
from this playraw
Now, when a color channel is raised way above the “highlight rolloff point” you can choose to mix its value into the other color channels to lighten and desaturate the color.
The more real (or recovered) highlight data you have, the better the quality of the rolloff.
As far as I’m aware, other editors have always done this, but I like how controllable this implementation is (rolloff point and strength), as well as what it can do in combination with Filmulator’s tonemapping algorithm.