There were some inconsistencies with the blade and rolled edge fenders. However looking at the blue on that fender I would say it’s pacific blue and not riviera, that would make it Tom a 65 T120R.
Color depends upon how well the barrel was stirred, and how many times they dipped paint out between stirrings. Also it depends on how heavy the paint was applied, and who was appyling it.
Don Hutchinson and myself did a series of articles on paint for Vintage Bike. As a part of this project we got into his stash of new Trident front fenders in original wrapping. There was some dozen or so. No two were alike: as to color, amount of flake, width of stripe, or width of pin stripe.
It wasn't till the T140's came along were a fiberglass mask was used to outline the tank scallops. Before that, they were done by eye, as was the pin stripes and the width of the fender stripes. The T140 paint jobs always made me nervous. My brain was so used to each tank's paint job having a personality, that when the "perfect" (well near) T140 paint scheme came along it made me think something was amiss.
I was brought up in a home that the main part of the building was post and beam. It was held together with pegs. Nothing was square. It was to become my normal as to what the space should look like. When I got into a house where you could drop a marble on the floor and it would stay where it was put it made me nervous - my senses thought something was wrong.
The 68/69 Trident color was also called aquamarine but to my eye it was a darker color than on the T100 posted earlier in this thread. I attach a photo of one of my 69 Tridents which illustrates what I mean These colors are pretty much original---the gas tank etc were taken off a Trident in about 1970 when a beauty kit was installed and then were on a back shelf at a small dealers in central NJ before they were rescued when the dealer retired. Having said that I understand and agree totally with what John says about color variation. When I was in the Meriden factory I didn't notice that aspect particularly but it was certainly in synch with everything else that was going on there. I can also identify with Johns comments about houses. I grew up in a thatched cottage in England that was built in 1628. There is one difference between John and I---if I dropped a marble on the floor it would stay where it dropped--because the floors were dirt floors!