Ranks
All Ranks have a color that represents them. Therefore, everything that has a Rank, meaning Skills, Classes and the like, though not always, will tend to be of a color that shows what Rank they are. Most Warriors with high level Mana manipulation efficiency, however, have the ability to adjust their Mana and conceal it, thereby making it impossible to tell the Rank of their Class or that of whatever Skill they would be using at the time. It's also important to note that some Special Attacks may take on certain colors but that's not to mean that the Skills said-Special Attacks are under are of the Rank said-colors represent.
Ranks and their Colors
White for F-Rank
Grey for E-Rank
Green for D-Rank
Blue for C-Rank
Purple for B-Rank
Orange for A-Rank
Red for S-Rank
Maroon for SS-Rank
Black for SSS-Rank
Classes and Skills
All Classes and Skills are divided into three Types. The majority of a Warrior's Skill Types will depend on their Class Type. To clarify, if a Warrior's Class is of a particular Type, then the majority of their Skills will be of a similar Type, meaning that while a Warrior's Skill Set will in fact contain Skills of other Types, it will undoubtedly mostly consist of Skills of a Type that corresponds to their Class Type.
Class Types
Support Type: e.g. [Secretary/Priest/Blacksmith]
Stealth Type: e.g. [Spy/Thief/Ninja]
Assault Type: e.g. [Soldier/Knight/Samurai]
Skill Types
Aid Type: e.g. [Systemize/Heal/Craft]
Covert Type: e.g. [Hide/Swipe/Shadow]
Battle Type: e.g. [Artillery/Paladin/Swordguard]