It looks good, a nice coffee color.

Very interesting - I'm all for reducing toxicity. Do you have any
experience with coffee- (or tea-) stained wood fading if exposed to
sunlight?
Also, I wonder if coffee could be dissolved in 1-lb shellac to make a
non-grain-raising colored finish. In my experience, orange shellac
looks good on red oak, but looks too yellow on white oak, so I've been
trying stains/dyes that would make it look less yellow, but still clear
and natural-looking.
Thanks for sharing,
Andy