I’m a sucker for Sonic Blue and Surf Green but mostly because my old and much-loved 1986 MIJ ST62 started out as Sonic and has progressively aged and yellowed until it looks almost exactly like your new re-fin!!
I would have voted for almost exactly what you ended up doing but it felt strangely self-serving to do so (!). Thanks for sharing though: I have often considered swapping the original white plastic three-ply pickguard (which is still oddly white after all these years) for either tortoiseshell or an aged mint-green — I think I now know the answer!
When i bought my 2010 Custom Shop '62 Strat with a mint pickguard, i asked the dealer why the rear cavity cover was white when all the other plastics on the guitar were cream...he said that it was normal because the parchment doesn't change colour with age.