Lens Performance     CLEAR- Poor lighting, indoor ranges and eye protection.  For shooting indoors when no contrast is needed.  And excellent safety lens when hand loading. - PALE YELLOW Brightening effect in low light conditions, dusk or dawn.  A very light color tint allows this lens to be used indoors, outdoors, in flat light or at night. - MEDIUM YELLOW-Maximum enhancement of orange clay targets in low light conditions. YELLOW- Overcast foggy days or late afternoon.  Good lens for rifle or pistol shooting with black and white targets.  Can be used in indoor ranges. SUNSET ORANGE- Bright, hazy conditions.  Slightly darker than orange (#45) to absorb scattered blue light, for contrast.  Enhances visual acuity. ORANGE- Excellent all around lens for orange clay targets.  Dull cloudy days, dusk or dawn.  Enhances the orange of the target. VERMILION- For shooting against green backgrounds, also works well for those with red-green color deficiency.  Highlights orange and dampens green.   Good lens for those who see orange poorly. LIGHT PURPLE- Provides excellent contrast of orange targets against green background or blue sky.  Combines grey and vermilion.  It dampens the green and enhances the orange target against trees. DARK PURPLE- For very bright conditions.  Darker than #47(light purple), a lens for very bright sunlight and provides great contrast of orange targets against a deep blue sky.  And excellent lens for glare reduction. Brown- Light reducing, giving good definition of orange targets.  A good all around lens for shooting orange targets on bright glaring days with open background. Ranger Bronze- High contrast for bright, glaring days with open background.  Good for hunting and snow conditions. Grey- For bright days, rifle or pistol shooters.  Reduces light and transmits all colors at the same level.  Does not enhance orange targets.  Use in bright sunlight.