system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why objects that are interacted with in cartoons colored a slightly different color/shade than other objects in the scene.

For example: There are a bunch of cabinets, all essentially the same color, but the one that is opened is slightly different from the rest.
gpt
Most of those cabinets are a background painting that the animator works on top of. The opened cabinet is a different color because it is being drawn by the animator and he's trying to match it the best he can.

(I paint those backgrounds for animated shows, by the way!)