In order to be patented, an invention need to be useful. Can aesthetic features be considered useful (helps selling the product)?
For example, you have a door with a whole new mechanism that when you close it, there is no visible separation between wall and door, it looks good, but no other use. Can that new door be patented? It is new, non obvious, it is very useful in the sense that it helps selling the door.
But on the other hand, if aesthetic features can be patented then I can see artistic patents on shape, color...
The question is more about engineered works to achieve aesthetic features.