Yes, I had red-brown color. My natural color is dark brown, but I had alot of gray. When I henna'ed the grays, they turned bright orange!!! Mixing the indigo and henna and applying for just a little while turned it red-brown. Too much indigo or if it's left on for too long will turn it black!! Be careful! I don't know about mixing in the coffee...never tried it.
9/1/10 at 2:15pm