I would imagine I’m not the only Doper out there this happens to, so I am coming straight to the source for all the information.
Why in the world does purple grape juice, grape carbonated drinks and grape Kool-Aid turn one’s (ahem…!) feces BRIGHT GREEN? I know it must have something to do with the dyes in the drinks. But why green? And why doesn’t other artificially colored drinks turn it some other color?