I'm aware how lighting can effect colours - it's my job. I've included a correctly balanced photo taken with a colour chart for accuracy. It also includes some references. I know these references are not to be trusted! But they are a starting point.
My intrigue with the colour of Jag-Stangs is more about why Fender sold these guitars as Sonic Blue, when it bares little resemblance to other Fender guitars which are Sonic Blue. I have seen some photos of Jag-Stangs looking a lot more blue, so I wonder if those photos are just incorrectly balanced, or if there was colour variance in different batches of the guitar.
I don't think my guitar is the 'wrong colour'. It fits Kurt's original request for 'Aqua green/blue like old mustangs'. However, it is nothing like any other 'Sonic Blue' Fender I have seen