Whats the best way to pull this off? I want to be...

# compose

[xxfast]

Whats the best way to pull this off? I want to be able to .clip() with an inverted shape, so to say. A coloured circle shape wouldn't work here because the surface colours are all transparent.

[natario1]

You should be able to compute a Path for each image and create a clipping shape out of it. Is it worth the effort compared to colored circle? Probably not