LED Galaxy Projector Laser Star Lights with Remote Colors are red, blue & green and you can mix and match Sound sync is activated through the MUSIC button on the projector or the Music Mode buttons located on the remote. The audio sensor is located on the side of the projector, be sure it is not covered. Purchase this for $9 or add it to a bundle for free! Please ask me any questions I respond quickly Sort my closet by price to check out all my free items! Purchase an item for $10 or less Or add it to a bundle with another item for free! All offers are accepted or countered Same day shipping Smoke-free, pet-friendly home