What doesn’t seem to be addressed is the name, Artificial Mondrian. The works may not be infringing on Mondrian’s copyright (and I don’t think they are or should be), but the use of Mondrian’s name would almost certainly be infringing on Mondrian’s moral rights, if not legal ones as it implies an endorsement by Mondrian or his estate (although if Mondrian didn’t have a trademark on his name, which seems unlikely, he doesn’t have legal recourse).