Brown VS. Gray Polarized Lenses for Your Sunglasses | SportRx - YouTube
Tint Matters: The Ultimate Guide to Choosing Your Sunglass Lens Tint - Tabulae Eyewear
The Eye Place NG - Lens color is one important thing to consider when selecting your sunglasses for both practicality and fashion. Sunglass lenses come in a variety of colors (or tints)