Warm white (3200K) and cool white (6500K) LED Strip 16ft, 24V, high CRI (95+), 450 lumens per foot LED strip underneath stair railing.  Pictures show warm white, 50/50, and cool white.  Plan to build controller that drives the LED strip and adjusts color and brightness based on sunrise and sunset. For now, I leave it at 50/50 warm/cool and use Wemo switch for automated timer.