The lenses i have used are oakley frogskins lenses. Therefore i recomend ordering them if you are using my plans. When it comes to color i recomend using either black, brown or gray. Vibrant colors will draw attention away from the wood, and is therefore not suitable. I recommend polarized lenses, but it is not a must.here is a link displaying available frogskinns (replica) lenses on ebay.1.5 Order/salvage hingesYou will need hinges, obviously.