My midnight black Mac is gray with a black snap on shell.  It tried to open and set up in the O.S. advertised but from the first time it opened it was set to run updates automatically and of course there was a problem with firmware and the Mac is so old it isn’t supported for the one reason I bought it for garage band lol didn’t check the specs that’s my fault never owned a Mac just watched a YTube video of a 2012 MAC using logic and Garage band and thought 2015 would just work cheap as an alternative to a $1500 iPad worth it if you don’t mind finding a patch and buying stuff like a thumb drive or sat cable to do anything.  Don’t be naive lol.