Special Edition Dark Smoke Carbon Fiber Tail Light Overlays - 2015+ WRX / STI
This material is not cheap! It's made with pride in the USA and then trimmed down in the USA to fit your vehicle.
It does allow light to pass through while still giving you that dark carbon look. If carbon fits your theme, you should take a serious look at this mod.
They're easy to install and can surprisingly transform the look of your vehicle.
Clean and wet the surface of the overlay and the tail light using of a mixture of soap (1 drop of dishwasher soap) and water can help you align the piece. Place it in the appropriate area and squeegee the water out with your fingers. This will prevent damage to the surface of the overlay. Allow 24 hours for the overlay to fully stick to the tail light. Once completely dry, they will hold up in automatic car washes and against most power washing.