The colors mix when you swipe.
The more paint the more flowing and currents pulling on the cells, the less paint the less flowing and currents pulling.
Did a base layer of each color and on the side. It’s a thin layer so not too much flowing there. Used paint, pouring medium, and silicone in a squeeze bottle.
Then went over it with more of each color.
Then a squiggle layer of white.
Then a squiggle layer putting BFF colors on top of each other. This will reduce the mud factor.
Then more white on top.
Swiped with a piece of paper and there was the big bold magenta spot at the top so used the paint on the paper to fill that in. The colors on the paper were different because they had been mixed longer.