What data does an artist consider when he paints? He does sort of an optimization procedure very similar to what something like Deep Dream does. But rather than doing response optimization to make random-noise more "dog-like" or "cat-like" or "human-like" (as Deep Dream does) the optimization is done to evoke a certain feeling within the artist himself. To create more extreme feelings than just a photo-realistic rendering.

The mapping between feeling and images are correlated to each other through experience. Certain images are fundamental to human experience and the human brain through evolution( a mother smiling, scary monsters). Others are learned (ever been hit by a car? bet that every time you see that exact model and color of car you'll feel an emotion)

Here's a thought experiment:

What if we fed the deep learning "painter" tons of 3D animation. Each point in time would be a full 3D Scene. Each point in time would be labelled with emotions "scary", "happy" , "angry"

I bet the algorithm could generate original art and learn new artistic styles by maximizing response to certain permutations of feelings.