I do not where this optical lense color guide came from and I apologize upfront for not giving credit where credit is due.
Lense Color Guide
|GRAY 3 reduces the maximum amount of visible light and allows for true color recognition. Good for bright sunny days and heavy glare situations. Best uses include driving, deep-water fishing and general use.||GRAY 1 is a lighter shade of the Gray C lens. Transmits colors evenly and allows for true color recognition. Good for partly sunny to bright sunny days. Can be used as a base creating custom colors.|
|BROWN 3 provides excellent contrast and improves visual acuity and depth perception. Good for bright sunny and varying conditions. Reduces blue light. Best for driving, golfing and shallow water fishing.||BROWN 1 is a lighter shade of the Brown C color. Improves contrast and depth perception. Good for partly sunny to bright sunny days. Can be used as a base for creating custom colors.|
|YELLOW provides the maximum light transmission of any polarized lens. Increases contrast and filters out some blue light. Used in low light conditions such as overcast or cloudy days. Popular among shooters, hunters and for night driving.||MELANIN blocks high amounts of blue light, while maintaining true color balance. Melanin provides high contrast for better visual acuity and is good for bright sunny and varying conditions. Great for golfing, driving and fishing, or any one with macular degeneration.|
|ORANGE increases contrast and blocks blue light. Best in overcast or partly cloudy conditions. This is the most common lens color used for clay target shooting. Also used for hunting, biking and skiing.||RED is a vibrant color that increases contrast. Often used for fishing in early morning or late evening hours. Used in target shooting for bright sunny conditions. Also used for skiing and hunting.|
|VIOLET increases contrast and dampens certain backgrounds. Violet is often used by shooters in average or bright conditions. Also used for skiing, snowmobiling and golfing.||BLUE is used in partly cloudy to sunny conditions. Good for tennis, golf, snowmobiling and shooting at green targets. Blue lenses let in the maximum amount of blue light.|
|GREEN has slightly better contrast than the gray colors, but is not considered a high contrast lens. Green maintains true color balance and is a good choice for varying light conditions. Used for tennis driving and golf, as well as an all-purpose color.||Clear lenses may be tinted to create custom colors for every need or request.|
Lens Colors and Tints: The color of the lens is usually a personal decision, but here are some facts to keep in mind:
Mirrored: Reduces the amount of light that reaches the eyes; good at high altitudes.
Gradient: Shaded from top to bottom. (A double-gradient lens is dark at the top and bottom, and lighter in the middle.) Driving glasses are often gradated so that you can see the dashboard clearly.
Photochromic: Automatically darkens and lightens as light conditions change. Photochromic (transitional) lenses will not get as dark as a standard sunglass – Grey 3, it will be closer to a Grey 2. They are not instantaneous like they elude to on the television commercials, they take sometime to adjust to changes in light. Heat also hinders the photochromic (transitional) lenses from getting dark. Your glasses in the winter when it is cold, will get very dark, the same pair in the hot summer will seam like they are not working as well.
Tip: Darker doesn’t necessarily mean better. The darker the lenses, the more visible light they block. Brighter conditions demand darker lenses. It’s important to keep in mind where you’ll be wearing them most. Sunglasses designed for mountain climbing, for example, generally have lenses too dark for everyday wear.