Not Pilla but from Castellani web site
TRANSPARENT: - The best choice to protect your eyes from wind and dust. It doesn't add any tone color. Light Transmission 87, 15 %
YELLOW: - Highlights orange clay targets, enhances contrast in low light or overcast conditions. Light Transmission 82,25 %
CLEAR ROSE: - Offers incredibly crisp, clear vision by incorporating precise technology that filters out blue light to increase contrast, this lens is the choice for low light conditions. Light Transmission 75, 04 %
ORANGE: - Excellent all around lens for orange clay targets. Blocks haze and blue light, and enhances the orange of the target. Light Transmission 53, 55 %
LIGHT BROWN: - Light reducing, giving good definition of orange targets. A good all-round lens for shooting orange targets on bright glaring days with open background. Light Transmission 48, 37 %
H.I. PINK: - Our new color for 2014, fantastic when shooting orange and black targets. This lens darkens the sky and fades out the green background. We suggest to wear it 5 minutes before shooting, allowing the eyes to get used to the color. Light Transmission 46, 43 %
VERMILLION: - Terrific lens for shooting against green backgrounds. Works well for those with red-green colour deficiency. Highlights orange and dampens green. Light Transmission 46, 20 %
RED: - Inspired by our Vermillion lens we studied a new stunning color (traffic light red) that guarantees max contrast and definition. Light Transmission 35, 06 %
LIGHT PURPLE: - Provides excellent contrast of orange targets against green background or sky. It dampens the green and enhances the orange target against trees. Light Transmission 41, 18 %
DARK PURPLE: - A great lens for very bright conditions. Provides contrast of orange targets against a deep blue sky. An excellent lens for glare reduction and snow. Light Transmission 20, 79 %
GRAY: - a neutral, or "true" color that allows the wearer to see all colors as they are. Gray shooting lenses do not enhance the target, but they are good in bright sunlight. Light Transmission 18, 03 %
DARK BROWN: - Light reducing lens for bright, glaring days with an open background. Great for picking up brown hues when hunting game birds. Light Transmission 15, 25 %