Hello 50’sKID,
Thanks for the question, you have grasped a very important detail of Paintstop …
You can use 2 layers in paintstop, BASE and TOP …
to have that kind of effect, you must go to the EDIT menu and click on SWAP LAYERS, the reverse levels becomes TOP> BASE and BASE>TOP, becomes.
very simple but very useful.
then adjust the opacity.
I hope to have helped to understand.
Best regards