Smog Tube correct color on 69 Camaro

[miket1]

What is the correct original color for the 69 Z28 smog tubes.

Thanks

[william]

Vintage road test photos show OE tubes were black; JM's '69 Camaro book lists them as black zinc. I believe some service replacement tubes were gold cad.

[68camaroz28]

The ones my friend just picked up with his survivor smog set up are a dark phosphate.

[miket1]

My old worn original's looked like a flat black, or a very low gloss, like 10% or so, I  painted them with a dark zinc phospate  but not sure it looks exactly like it should., I may try a flat black on one to compare them.

[stovebolt]

Maybe this will help. It's a NOS smog tube for my 1968 L6.