It just makes it sound like you want it to be exclusive doesn't it? How many black people are going to feel comfortable in a 'white friendly place'? It's kind of 'you don't belong here' in the most explicit but not threatening way possible.
If I (white) saw 'black friendly cafe' or something, I don't have a problem with that to be clear, but I would absolutely assume that I'm not exactly welcome, that it's intended to serve that community - as in perhaps even specific to a particular country/region people are from (or have heritage) locally.
If what you want is actually a hyper-inclusive mix, I don't really know what you can actively do, but I do think you need to not mention any particular groups or categorise people like that.
If I (white) saw 'black friendly cafe' or something, I don't have a problem with that to be clear, but I would absolutely assume that I'm not exactly welcome, that it's intended to serve that community - as in perhaps even specific to a particular country/region people are from (or have heritage) locally.
If what you want is actually a hyper-inclusive mix, I don't really know what you can actively do, but I do think you need to not mention any particular groups or categorise people like that.