: Use a white laminate or light-colored plywood base. Opaque or dark materials will absorb the light and ruin the effect.
: Always design with a "trap door" or removable border. LEDs eventually fail, and you need a way to replace the light strips without tearing down the stone. Essential Tools for Your Install Onyx Shower Installation - Wall Panels pure onyx install
: To avoid seeing "hot spots" (individual LED dots), you must create a cavity between the lights and the stone. Pros often use a 12mm clear acrylic sheet as a support layer to diffuse the light evenly. : Use a white laminate or light-colored plywood base