Create a pair of simple black sunglasses for Roblox UGC with a minimal, clean design. The frames should be matte black, lightweight, and smooth, with no logos, text, or decorative details. Use dark, non-reflective lenses that are slightly tinted but not glossy. The overall style should be low-profile and modern, suitable for everyday streetwear, with a realistic but simplified shape optimized for Roblox avatars.