Do you need a specific glycol color? Traditionally, inhibited glycol color represented manufacturer, glycol grade, and other marking factors. However, as companies enter the industry there are no longer consistent marking factors. As a manufacturer, Houghton Chemical blends many heat transfer fluid & automotive antifreeze products with various colors. So whether you want clear, green, blue, yellow, or pink, Houghton Chemical can make it for you. Just ask. Website: www.houghton.com