isn’t that the silver and not space gray?

It 100% is but you really should not buy an M1+ device, for several reasons.
Main reason is this https://www.youtube.com/watch?v=0qbrLiGY4Cg

Then also there is the fact that booting to an external drive isn’t plug and play, which is unacceptable for something you want to call a computer.

Also, they can be iCloud locked just like iPhones, essentially creating a ton of waste