Black is cool but the cool factor wore off for me pretty quick when the day ended and cleaning time came with the temps in the teens.

I mostly used 10 to 12ga. guage mates In a nitro proofed 10ga. and with modern ammo (it threw beautiful patterns with Winchester AAs) to me the barrels just sounded or felt different than with a 10 ga loaded with smokeless powder. In my opinion the 12 to 20 gauge mates were a waste of money.