[Looking for a way to make a painted like surface]

I want to create characters that look like  they are created from globs of paint, almost like the surface of a painting.

heres a 2d example:

Heres 3d examples

 

 

Is there any way I can create a stamp with the shape of a pallet knife stroke, and at the same time assign it a color that is slightly random? or something like that

Thanks!