Yesterday we were at a "free entrance day" at a local arcade. About 7 pins and 18 arcade games. My son and I spent most of our time on the pinball machines. A young African American man (maybe 13) was watching us play games on a pin and then would try the pin after us. He kept coming over and watching us after his game was done. We said "Hi" and asked if he wanted to join us. He said no that he just liked to watch us a little.
We are not expert players by any means but I'm sure he learned a little watching us and we had no problems asking him to join us.
Be nice and most people will be nice back. If not, move on. Skin color means nothing. Being nice does.