Red light energizes and stimulates. The effects of red light can increase your pulse rate and get you charged up for a big game, pumped for a big meeting or in the mood for a little romance. This shower has a wonderful iridescent tile that sparkles. With regular lighting, this room itself must be a real energizer both in the morning and at night. To highlight iridescent particles in the tile, multiple sources of light should be used. Three or five small halogens would work perfectly. A tiled wall washed in light like this should be set perfectly so that the wall is smooth and flat. The closer the light is to hitting the wall, the more it will show flaws in the installation. Also, make sure the LED lighting, task lighting and fixtures are in place during the tiling process for complete accuracy.