Yep, it mainly boils down to personal opinion, unless you're talking about a judged concours...in which case nitpicking is the name of the game - but even that is just opinions, those of the officials. I agree that this thread has been a good, healthy, discussion. There are any number of ways restoration can be argued (as in "discussed", not "dissed") and they're all equally valid.
The absolute worst that could be said about this particular resto is that there are a few nitpicky details which the new owner may, or may not, wish to alter...and with very little cost or effort, at that. The current owner did a quality job with this bike and the "nitpicking" is just educational discussion. How else do fellow enthusiasts (including future show judges, for that matter) learn the minutiae?
As for "original paint colors"...omg...how long is a string? There's a lot of variation, especially on the earliest examples. You might be surprised just how saturated some of the factory colors really were, when new. NOS tins can be an educational experience. Again, a lot of opinion involved in this area, as well as a range of values within each nominal color.