Red wine dark stool relation?

[32malewithcolitis]

Is red wine quite common to discolour stools?

I had a fair amount last night (3 large glasses) and today my stool was verging black and was quite a fair bit of mucus. Usually it’s just normal looking. Seems coincidental that 1. The wines aggravated me perhaps due to the mucus and 2. The colour of it.

Sorry for the TMI