[kirkules]

Honestly seems more like a user-end personalization than something a developer would use. In a game settings menu, you choose an image that maybe you uploaded to use as the game style? Definitely something people would use. Especially if they figure out how to make it selectively apply to only certain textures/objects or parts of the screen, which seems likely.

[uxp100]

Street Fighter 4 had a feature kinda like that (with predefined selectable styles). AFAIK it was not popular. Sometimes my friends would turn it on as a joke.