COLWYN Eyeglasses by Blackfin. Color: Grey/Aqua Green, Size: 51-17-145. The Colwyn eyeglasses showcase a sophisticated and versatile design, crafted from high-quality materials. With its sleek titanium frame and modern lines, the Colwyn offers a perfect balance of style and functionality. Ideal for both professional and casual settings, these glasses are a timeless addition to any wardrobe.