Shaders in Destiny 2 can alter the color of your Armor and weapons. There is zero point in collecting fine looking guns and armor if your colors are not co-ordinates after all. You can also use them on ships, sparrows and ghosts. The only items you cannot use a Shader on are Exotic weapons that can use an Ornament. Ornaments are effectively a special skin for the weapon.
How To Get Shaders
Shaders can be found in a few different ways. You can get them by opening chests in the playable areas of the EDZ, Titan, Nessus and Io. You can get them from Packages by ranking up with the various NPCs as well. Some can only be received by taking part in specific activities (a good example of this are the Raid Shaders). Finally, you can get Shaders from Bright Engrams, or purchase them directly from Eververse. Tess Everis will sell three different ones each week.
How to Equip Shaders
Equipping a Shader in Destiny 2 is easy, but you need Glimmer to do it. Just go into your character screen and view the details of the item you wish to apply it to.
The third box underneath the weapon details is “Default Shader”, hover over it to bring up a list of all the ones you have collected. You can also use this to reset any Shader you have already applied without putting on a new one.
Hover over the one you wish to apply and it will show you the the Glimmer cost for putting it on. You can also Preview the Shader on the item. Once you are happy, just hit Apply and your fancy looking loot should look even fancier.
To learn more about the inner workings of Destiny 2, be sure to visit our Guide Hub.