What you have is correct, the woodgrain is just weathered. Here's a pic of one for reference, they are available at places like LMC and several other vendors. Here's the LMC one:
https://www.lmctruck.com/1967-72-che...te-bands-color I also thought someone sold the woodgrain tape only to repair one's own trim - but can't find it - it may have been for the lower trim only and not the tailgate bad.