Mandorlian Ranks

In the "Mandalorians People and Culture" article on the Star Wars Insider #86, it states the following about Mandalorian rank:

___________________
     Armor is often handed down between generations, especially the beskar type.  It's intricately customized to suit the wearer’s needs and tastes and is worn by both genders.
     Armor color and markings can indicate many things, from clan or family to more ephemeral concepts such as state of mind or a particular mission.  Sand-gold represents a quest for vengeance; black, for justice.  Mando’ade will often repaint their armor with new colors if they’re on a particular task or have changed clans.  With the exception of the Mandalore, markings never correspond to fixed rank—a concept they find hard to accept.
     Sometimes, though colors on armor simply express personal preferences.  Blue and green are especially popular.  While other soldiers opt for camouflage.  Mandalorians seem not to care about being conspicuous: “It’s one thing to see us coming, and another to do something about it” is a common Mando saying.
     Sigils—symbols painted on the helmet or chest-plate—often identify the wearer’s allegiance, lineage, or loved ones.  But they can also be marks of honor, such as the jai’galaar’la sur’haii’se (shriek-hawk eyes).  Jaig, as they’re better known, are bestowed as awards for bravery by some clan leaders.
________________

Hope this helps you out, dude.