Temperature is key when spraying high-quality foam with maximum yield, and ColorWise nozzles from Fomo provide a visual check to ensure the chemical is not too cold. This product turns blue when the chemical being sprayed through it drops below 60°F, which tells the contractor to stop spraying and bring the chemical to the proper temperature (between 70° and 80°F) before starting again. The nozzle changes to blue if left in cold conditions but changes back to clear within seconds if properly conditioned chemical is sprayed through it.