I recently became the owner of a beautiful 1988 360/6 in Jetglo.
It's generally in fantastic condition however the Rickenbacker logo lettering has faded/rubbed off noticeably in parts:

Should I just leave the lettering as-is?
Or would it be acceptable/not unwise to attempt a careful touch-up with a black automotive pen, such as this one (noting I'm in Australia, so this is a local store)?
Any thoughts, warnings, suggestions greatly appreciated.