Spa Electrics EMRXL12R2WMPL (RBG+W) White Retro LED Replacement Light Kit. The Retro Series’ compact design but powerful output makes it the perfect replacement for existing pool lights. Designed specifically to replace existing AQUA/LAMP®s. The Retro Series light kit can replace old, defective pool lights in a matter of minutes. The retro light can upgrade a halogen light with an energy efficient LED light which can be integrated seamlessly with your automation system or wall switch.