Strarry ceilings in the wet environments are for bathrooms, jacuzzis, saunas, SPA centers, or pools, as exemple the lights in the rockery cement screeds, or the garden lights, the patio lights, walkway or roads lights etc. Using the physical characteristics of optical fibers,the STAR SKY and starry sky effect that beeing the bright spots in the environment mentioned, the optical fiber beeing ideal for this kind of applications.