I have asked this before and told there was nothing in the works.
But I'm asked by potential and existing Customers about this all the time. I doubt I could be the only one? I've always thought ( and heard for clients) that a black or graphite option would be fantastic.
This week I was making some cold-calls and saw that Square now does have this option out in the market. It's a nice new graphite/dark gray looking color. They must have had request and felt there was also a need if they did it. Maybe this can be looked into ?