Modern LED pool lights use 75% less energy than traditional incandescent pool lights and last 10x longer. Color-changing LED systems (like Pentair IntelliBrite or Hayward ColorLogic) let you set mood lighting via smartphone app — cycling through 7 colors or 10 light shows. Cost to install: $400–$900 per light. A typical 16×32 pool needs 2 lights. Pair with a Pentair EasyTouch automation panel to control lights, pump speed, and water features from one app.