Oh boy!

I am a bit more into the background and lore of Star Wars but even I had no clue about the Mandalorians until a little while ago.
The Mandalorians appear to have a number of family clans (Kryze, Vizla, Saxon, Wren, Fett, etc) all of whom appear to have a set colour scheme (or variations around a common theme) and associated suit patterns. The Mandalorian doesn't belong to any of these, he belongs to a group that grew out of the extremist Deathwatch sect that (currently) has no set uniform colour scheme and members can create their own scheme to suit (heh) themselves.
So whether you decide to create a group of independants or a clan unit kinda depends on how you want to paint them - a fairly similar palette or each a different scheme entirely.
Hope this helps.