Gotcha, thanks for the images!
The word you’re looking for is ‘color-banding’ (Which can be accomplished through a post-process material)
If you can get it implemented please update us with pic! 
Gotcha, thanks for the images!
The word you’re looking for is ‘color-banding’ (Which can be accomplished through a post-process material)
If you can get it implemented please update us with pic!