yeah, I just got a mint red used one for Mutt that I dyed black and it looks awesome.. not a crack in it.. but they are still 25+ yr old parts and may be a bit more brittle and not far off from cracking...
like I said, I think the nicer, pricier aftermarket repops are supposed to be pretty damn nice.. (they should be for $300 or so), fit well, and obviously fresher material, but when not installed, side by side, you can see some differences from an NOS, but not noticable when installed iirc..
I do know a fair amount of guys in here have tried them.. iirc, Teck may have a nice gray one in his killer red K5...