The colors that are available in the tint drop down on RGP’s come from the product options in Inventory for that specific RGP lens. If you go to Inventory and open one of your RGP contact lens products you will see a slider in the bottom left for “Product Option Information”. Click on that slider and hit “Edit” in the bottom right. You can then add available colors for that RGP product. Any colors that you add here will be made available in the tint drop down when prescribing with that product.