A dispute over light fixtures at a glitzy Beverly Hills hotel took a dark turn when Miami contractors say their wealthy employer sought to bilk them on a five-year deal.

Energy Smart Industry LLC filed suit in state court in Miami last October against Morning View Hotels Beverly Hills LLC, which owns the landmark Mr. C Beverly Hills hotel, where nightly rates run from $467 to $2,484 for an 800-square-foot suite. The company claimed the hotel hired it to install top-of-the-line, energy-efficient light fixtures but was slow to pay the bill.