What would you do with card backs that are each one tint or shade different from each other?
I think this would be a great addition to a press-your-luck mechanic where you can perceive some risk without being able to pinpoint what card you are about to draw.
I had this thought a while ago, but Bottercot reminded me in this topic:
https://www.bgdf.com/node/22461
Do any games out there use this mechanic? Please tell me there isn't a "52 Shades of Grey" card game.