I "fixed a bug" in
Colorer in which it'd scale things (after it did its recoloring) by some non-integer value like 1.7 in order to things back to the original image size. When it doesn't scale things by an integer like 1, 2, or 3, it creates these weird circle artifacts.
Here's an example.With art, sometimes bugs are cool! They reveal a dimension unanticipated. But I just got tired of seeing the circles in this case. So, now it'll scale up to the nearest whole number that's under the scale that would have gotten it all the way back to the original image size. You end up with stuff like this image as result.