This funny article I found about the "feud" between Picasso and Modigliani makes it seem like they too were mean school boys, fighting over things like clothes. Modigliani was the snazzy dresser and Picasso wore fishermen's sweaters and patched trousers. There are still to this day artists who could be described as dressing this way. I don't know that they feud over such things but there's always a possibility.
The movie is two hours long, which is just long enough to lounge around and recuperate after a long weekend. The whole movie can be seen via Youtube with the Spanish subtitles again.