It is more than likely a UV water treatment system. UV light is used to get rid of organic and inorganic chemicals, pathogens etc, without the addition of other chemicals.They have plumbing and electrical for the pools at both Kidani and BLT. The second page mentions UV. Are they adding new colored lights to the pools? I would have geissed they'd have done that when they were installed.
http://www.water.siemens.com/en/products/chemical_feed_disinfection/ultraviolet_disinfection/Pages/uv_swimming_pools.aspx