Pale Gray and Dark Gray Dye Module
The Pale Gray and Dark Gray Dye Module can be crafted by players who have the Artifice crew skill levelled to crafting level 320. Once you have reached Artifice level 320, the schematic for this dye can be purchased directly from the artifice crew skills trainer. This dye can also be bought from other players on the GTN, or crafted and then sold on the GTN.
When you use the Pale Gray and Dark Gray Dye Module, it will dye the primary dye section of your armor Pale Gray, and the secondary part of your armor Dark Gray.
All dye modules are one-use, so once you've added a Pale Gray and Dark Gray Dye Module to your armor, you will not be able to remove it and reuse it later.