I may be a little hazy about this but, after reading the response the first point of similarity about trancelike painting and supernatural control in both stories sounds rather familiar. Then it dawned on me that Rod Serling had written something very similiar to this for his Night Gallery series in the 70's. And it was a televised episode.
And how about Heroes? One of the powers was the ability to paint the future while in a trance-like state.