Bringing things over into here. I don't want to start an argument, but it seems the matter has once again come round to head-butting viewpoints. Here's mine...
Concord Dawn was conquered by the Mandalorians before the Mandalorian Civil War, so they've been Mandalorian in culture and genetics for several thousand years.
It's unknown how long the New Mandalorian movement has been going on. Some speculation is that the Sacking of Coruscant toward the end of the Great Galactic War was avenged by the Republic bombing Mandalore, and the movement started then. The dialogue from the Clone Wars episodes featuring Mandalorians left me with the feeling the movement was more recent -- years, perhaps decades, and probably not more than a century.
A lot of stuff in the 60 BBY - 6 ABY range is in flux currently, thanks to the Clone Wars. We don't know which characters will still exist on the other side, or what events will still have taken place. We don't know what will be retconned to within an inch of its life, and what will remain unaltered.
Jaster was a Journeyman Protector on Concord Dawn prior to quitting or being kicked out. Papa Fett's comment ("I'm the Journeyman Protector for Concord Dawn") implies there's just one for the whole planet. This, most likely due to sparse population on what is still essentially a frontier world. It's unknown if he had any Apprentices or any other regular or irregular militia backing him up.
When Jaster left and formed the True Mandalorians, he had a fair number of ready followers. He, and they, all had similar armour. I don't know if that was armour he had as a Protector or somethign he got later. I don't know if the colour scheme was something inherited, or something he established. Insufficient data, either way.
Some years later, when Jango became a squad leader under Jaster, he was sporting an outfit that was a dead ringer for Boba's in Episde V, with the additional armour we're familiar with Jango having. I haven't seen anything indicating Jango served as a Protector, and was most likely fighting for Jaster and his True Mandalorians that whole time.
Later, after Jaster died, Jango's True Mandalorian forces on Galidraan all had drab green armour, too, while Jango's was closer to a dirty version of what he was wearing in Episode II. Unclear where his green paint job went. Still no association with Protectors.
That brings us up to about twelve or thirteen years before Episode II. With the destruction of the True Mandalorians and Jango's capture, we have a break in the timeline. We also have no idea what was going on in the Mandalore Sector, or on Mandalore or Concord Dawn. We don't know who Papa Fett's successor was, or anything about the nature of Protectors -- of any modifier -- in this era.
The next mention is right around the outbreak of the Clone Wars when Spar, masquerading as Boba, rallies 212 supercommandos to fight for the Separatists. Fenn Shysa's now-dated account says that they were "charged with the ultimate protection o' the Mandalore system", and were called Mandalorian Protectors. This was the backstory West End Games seized and expanded upon for Boba's backstory when they had him being a Journeyman Protector -- he was intended to be a part of that organization.
We can't speculate on the extent of the earlier Protectors, there's no data. We saw a lot of True Mandalorians in the same general colour scheme as Jaster, an ex-Protector. We don't know if the conflict between the True Mandalorians and Death Watch spawned the New Mandalorian movement, or if that was going on at the same time, but in a different place. All we know that's germane here is that Spar essentially restarted the True Mandalorian movement, albeit not under that name. We don't know if he formed a new version of a defunct organization, or re-formed an organization that had faded, or simply rallied as many as could fight out of a stable force already spread out through the sector, or inducted a bunch of non-Protector policemen into the organization, or what. *shrug*
At any rate, about seven years after this, we have a holo of Boba -- himself a Journeyman Protector at that point -- wearing the outfit we're familiar with from Episode V. So there's another correlation.
And then, of course, about eighteen years further on, we have Tobbi Dala referring to his gear as the uniform of a Mandalorian Protector.
Now, then...
Jaster was kicked out of the Protectors for murdering his superior officer. So was Boba, years later. Both were Journeyman Protectors on Concord Dawn. Both had superior officers that they were under the direct command of. I don't know if those superiors were stationed on, near, or far from Concord Dawn, but they existed. That implies the presence of more than a single Protector in the vicinity of Concord Dawn at any given time, both before and after the Clone Wars.
Jango wearing the uniform when he wasn't a Protector, but was Jaster's protegι, and Boba wearing it later when he was a Protector carries implications. As does the presence of other True Mandalorians wearing the same colour scheme across a fairly narrow palette.
Then we get to the immediately relevant problem of the Marvel comics. Early '80s coloring technology and artistic laziness aren't the same thing as what's in the movies. The white cheeks are a colouring error/contrivance. The all-green ensemble is a good way to same money on colour separations. And the funky round "T" symbol on the shoulders is a very bad misinterpretation of Boba's mythosaur badge. All of that is why I'm ignoring that symbol and those colours in the process of building my Fenn Shysa. He's going to look like Boba's squadmate -- same colours, different markings and accessories. If we're going to use the Marvel comics as the standard, then I insist the 501st mandate blue and purple Stormtroopers.

I maintain that True Mandalorian/Journeyman Protector/Mandalorian Protector is a false division. As far as I can tell, Jaster and his True Mandalorians were Protectors or ex-Protectors, Spar revitalized them after they were all but wiped out, and "Journeyman" is simply a rank within that organization. I maintain that the Protectors' badge is Jaster's yellow or blue mythosaur skull (earlier), or Boba's red mythosaur skull withrectangular(ish) white(ish) background (later). I maintain that the "wheat sheaf" badge on Boba's chest plate is his family crest, inherited from Jango, inherited from Jaster -- who probably adopted Jango after his parents were killed.
My suggestion for an inclusive standard for this costume range would start out:
Dark to medium neutral-tone flightsuit (grey, tan, blue-grey, green...)
Dark bare metal or grey-green/olive green/dark green armour and helmet (white cheeks optional)
Shoulders and knees in a matching contrast colour (dark yellow most prevalent, but also red or blue)
Visor frame in red, yellow, or blue
Optional red-brown sash (we haven't seen many wearing one)
Optional contrasting gauntlets -- matched or mismatched
Optional rocketpack (neither Jango nor any of his men had one at Korda VI)
Let's see if we can keep the disagreement civil.

--Jonah