Patch 10.1.5 adds new Infinite Dragonflight customization options for Dragon Isles Drakes.
The new skin colors can be obtained from Dawn of the Infinite, the new megadungeon. Specifically, they drop from the final boss of the dungeon.
Here is a preview of the new skin options. There are also Infinite-themed horn/eye/hair/fur colors coming in the update, but they haven’t been implemented yet in the Rostrum.
Renewed Proto-Drake
Windborne Velocidrake
Highland Drake
Cliffside Wylderdrake
Winding Slitherdrake