Ornamentation
From Destiny 1 Wiki
Ornamentation is a mechanic that allows the player to customize the looks of their Weapons and Armor. Weapons and Armor will have perks that can be activated by ornaments to dramatically change their appearance without altering their stats. Ornamentation applies to not only Year 3 Gear but also Year 2 Exotic Weapons.
Ornamentation was introduced in Rise of Iron expansion.
