Colored gear with specific classes.

[Kiote]

Lol. Each class has its own distinctive color scheme for their respective equipment. That is the very definition of the term unique.

Are you mentally ill?

The Color itself has no impact on the Stat. It is a combination of Color+Armour that determine the stats.

Red does not mean strength bonus.

Red means Int bonus on one specific piece, strength on another piece, and fire resistance on another piece. This bastardized system doesn't even follow enough logic to lock a stat to a color. It's completely random.

All it does is determine that each color on any given piece of gear will change it's stats. No rhyme or reason.