These are mine after running all last spring & summer , about 2000 miles worth . The slight brownish color is the " high temp" VHT clear coat I put on to make it easier to wipe off grease & oil stains from the rough finish of the White Lightning ceramic coating . Good thing the discolored VHT comes off easily with a scotch brite pad and doesn't touch the ceramic coating at all .
My $.02...The initial startup w/ newly coated headers.
I wipe them down w/ alcohol, to remove finger print oils, dirt, etc.
I jump the engine fan on hi, add a portable fan over the ft end of the compartment.
Start and run to op temp, making SURE the engine is not running lean, not leaking oil on them.
Cool down, check bolts for torque.