Can I procedurally generate images in Ren'Py?

[BilMor]

I'm trying to learn enough about Ren'Py to determine if it is sufficient for a game I want to write. I specifically plan to have a LARGE amount of character customization. Let's say I want to be able to have characters defined by skin color, body type, etc. I can definitely do things like Hue shift the skin color and so I think that it's technically possible. But I'm going to end up with a ridiculous number of attributes if I want to use LayeredImage in the long run, once I start dealing with a large number of clothing items, all of which might need hue shifts, etc.

All of that gets to the fact that what I really need is to write a class or function that can return an image which I procedurally generate using composites and transforms of images (mostly for hue changes). Is there a way to do that?

I apologize if this has been answered: I've had trouble searching the forums tonight. Thanks!
Bil