Yes, you can use Licefreee Spray on color treated hair. As far as furniture and clothing goes, it was not developed to be used on inanimate objects. The conditioners in it may stain or cause oil spots. As far as furniture goes, a thorough vacuuming should take care of any lice on there. If you have throw pillows, bag them up for 10 days to make sure the lice are dead, or you can throw them in your dryer on the hottest setting to kill the lice.