The house at 135 James Dunham Parkway in Richmond Hill lights up the sky with Christmas decorations that move in time with the music when visitors turn their car radio dial to 107.1FM. The house is a model home for Homes of Integrity Construction Co., and vice president Meagan Mowry said the decorations are the company’s holiday gift to Richmond Hill. The house is lit nightly from 6 to 9:30 p.m. until Dec. 31.