If you can get a smooth wooden counter top, white makes it easiest to see dropped primers, etc. Using lots of gloss enamel with a poly coat over will last a long time. Don’t use dark colors, you’ll regret it the first time you’re looking for little things on it.
My bench was a little deep, so I got a 12”x36”x4’ tall metal shelving unit to hold dies, powder, manuals, etc. within reach.
I have read in computer forums that Formica isn’t a great option because it can create static electricity, so I’d stay away from that as a surface with primers and powder about.
Good luck!