This link will send you to Cerakote Gun Coatings where you can see all the color options available for you to choose from.
This link will send you to KG GunKote where you can see all the color options available for you to choose from. Look at the 2400 and 2500 series coatings.
This link will take you to Gun Candy where you can see all the color options available for you to choose from.