BRAINTREE — Christmas lights are a very personal thing, and they divide people into two distinct camps: colored lights and white, or clear, lights.

For many years, those old, clunky, easily-breakable colored lights were the norm. Clark Griswold, the character played by Chevy Chase in National Lampoon’s “Vacation” film series, wasn’t the only person to have major problems with those suckers, which tended to overheat and set Christmas trees ablaze, especially when you overloaded an outlet with several strands.