https://www.google.com/search?q=composition+abstract+paintin...
I think this is quite expected, since ANN constructs its own view on stuffs, which is basically deconstruction of images into local components, like local color relation and sub-patterns. Global composition and shapes will be destroyed in favor of local composition, which is pretty much what many modern abstract paintings were after.
While ANN can mass-produced stuffs like this, that doesn't mean it's gonna replace artists. It's gonna be the opposite: if artists learn through AIs, each of which trained on different sets of data (which can overlap), we will be able to see works in a different level. It's like go players study AlphaGo for new principles that humankind have missed.