Rainbow Drink

I haven't tried it. Found it on Pinterest and thought it looked pretty, but you make it sound very unappetizing, lol! I can't see how it would turn grey, but you're right, paintbrushes in water ends up looking like a mud puddle. Maybe that's only because there are usually dark colors in there though? Hmmm. Now I'm wondering what the blue and green juices in the glass are. Going to have to test this.