I've found taking two screenshots and adding them as separate layers works well, and then setting one as Difference, and then tweaking the opacity. Here it is

I've found taking two screenshots and adding them as separate layers works well, and then setting one as Difference, and then tweaking the opacity. Here it is in Pixelmator Pro: https://i.moveything.com/299930fb6174.mp4 https://i.moveything.com/299930fb6174.mp4