Pyramid Sight System Rear Color Inserts Choose the perfect combination of colors for your OuterImpact Pyramid Sight. The Pyramid Sight Rear Inserts colors are fully interchangeable. Color choice is individual and your natural preference aids in quick target acquisition and perfect sight alignment. So, get the most out of your OuterImpact Pyramid Sight System and customize your sights by picking the rear color inserts that work best for your eyes. The ATS Pyramid Sight rear inserts come in five colors: Green Orange Red White Yellow Thank you for your interest in our products. Check out our FAQ for answers to common questions and feel free to contact us at support@outerimpact.com.