Eggcrate question

[Coasting]

Your standard egg crate is white and is the same thickness on one side as it is the other. You can also find silver egg crate, which will help reflect back some light, and even better then that is you can find silver egg crate thats thicker on one side then it is the other. Maybe this will help reflect and direct more light towards the tank? Though I dont know what the silver is like for cleaning.
Any thoughts anyone on the silver with the varigated thickness?