It's intriguing comparing different views of the same area, in background art. Disney's attention to detail has always set them above and apart from all other studios.
The first view of the dwarfs' cottage doorway is when the animals and Snow White first enter. Note the cobweb left and above the door. (The door itself was intentionally removed to uncover as much B/G art as possible.)
This second view is at night, cel overlay of the door intact and closed. Note the warmth of the light, and many subtle differences between these two renderings.
Here are two views of the bedroom door: