Not sure - maybe it would be too much? But if there is already a color transparency what about adding transparency slider?
the idea makes sense, but there’s already so much ui on what should be a simple color picker …
so i’ll say this is pending greater demand
I +1 this request. I found myself wanting a slider UI to change opacity. I think it’d be very common for someone to simply want to tweak the opacity of a card (and not touch the color). It’s an entirely different “channel” of information, and users’ mental model have it separate from color (even though it’s encoded along with color.)