I brewed a dry stout kit a week and a half ago, and after checking the gravity I found out it is not nearly dark enough. it should be black, however it looks like a scotch ale or something along those lines. I'm sure my problem was that I didnt crush the grains good enough, but thats in the past. So I was wondering what could be done about this. I thought about buying some coffe beans, such as an expresso or french roast. Grind them up and place them in a cheesecloth bag and add that to the keg with the beer. I would assume that would beef up the coffee flavor and maybe darken it a bit more. is this a viable idea? any other suggestions?