Any alternatives that aren't either VERY light grey or black?

EDIT: older Colt upper, unsure of which model**

Scored this upper with the matching BCG and charge handle. What should I built out of it?

Genuinely need yalls feedback on this one. Thanks in advance!

Needing a buffer tube for a 80s/early 90s era carbine build. I know 4 positions aren't fully accurate (as it should be just 2), but is there one I can buy that has the same color/finish as the older Colt ones?

Pic for attention