 On August 28, 2014, Six Flags announced the Rocky Mountain Construction conversion of Colossus into Twisted Colossus.Twisted Colossus opened on May 23, 2015.On September 3, 2015, Six Flags announced the renovation of Revolution with a new paint scheme, upgraded lighting, and new train eliminating the controversial over-the-shoulder restraints that had been the source of the ride's spotty reputation for much of its life.