My personal take on this is that you aren't maintaining anything original with regards to the finish. I have a roughly 1967 Gretsch 6120 (this was a year with the sealed, thinline, double-cutaway bodies). that, when I got it, had all of its original finish removed and dipped in some sort of HEAVY epoxy. All of the hardware was missing. No joke. It was just wood, frets, and inlay. My original plan was to do a faithful restoration. To remove the epoxy coat, unfortunately, we blew through the edges of the laminate so going with an original-ish transparent finish just wasn't going to fly. We couldn't even do a "burst" with a black edge because the dark edge would have been so wide it would have looked very strange. So... we said, "Screw it" and just I just made it mine. The blasphemy had already occurred and there was just no coming back from it. It took 6 years to complete. No joke. Everything from fire, to flood, to near financial ruin happened slowing the process down. In the end, I got an amazing guitar that I just never would have gotten if I had faithfully restored it. I am sure it would have been great, but this one is mine.
If it were me, I'd make it mine. Given the desireable nature of the bass and, if it sounds amazing, I might try to a a restore finish to a color from the time that I would have liked.