I found ZL1 rockers on ebay already painted for $499 shipped.
They can be installed on any Camaro 6th gen with a minor mod - see
https://www.camaro6.com/forums/showthread.php?t=500230
The seller is 4x4.motors - he has an ebay store
https://www.ebay.com/usr/4x4.motors?...72.m2749.l2754 that lists ZL1 rockers in several colors.
Garnet Red wasn't listed but I contacted him and he has Garnet Red available so I ordered them. Apparently they came from the GM plant ready painted and in perfect condition.
I'll post back when I receive them. I plan on installing them on my 2016 2SS.