I don't know, I'm not seeing black?Here is the direct link with the colors. It is $10-25 extra for some of the color choices including black.
https://www.celltei.com/products/birdie-gogo-small-size.html
I see a color square that looks black but when I click on it and look at the go go it's olive green.
When I'm ready to pull the trigger and purchase I will email them first to see if black is a possibility with the go go.