The only foaming cleaner that changes color to let you know the surface is clean.Try Kaboom Foamtastic, the only foaming cleaner that changes color to let you know the surface is clean. As it sprays on blue, the OxiClean stain fighting bubbles get to work powering through soap scum, hard water, calcium and lime stains. When it turns white you just wipe away to reveal a deep clean and a sparkling shine with absolutely no dull residue left behind. Will not stain surfaces and leaves behind a fresh scent. 19 Oz. Fresh Scent. Powers through soap scum, hard water, calcium and lime stains.