Frame color: Sand Brown; Lens color: Brown Chromance; Frame material: Peek. Ray-ban RB4452CH 612473. Ray-Ban RB4452CH Chromance Liteforce are perfect for those who want to stand out from the crowd. The peek material and matte sand brown color give these sunglasses a unique look, while the square shape adds a modern touch. With polarized brown chromance lenses, you can be sure your eyes are protected from harmful UV rays while still looking stylish.