What causes window tinting to bubble or to turn purple? The bubbles and the color change are the result of a failure in the adhesive system due to the bad quality window film and bad preparation of the glass. Protect yourself from this potential problem by purchasing a major brand name window tint material. Quality films are available from most reputable shops such as ourselves, we use Lifetime Warranty Suntek and LLumar window films. Starting at $60.00 We can remove and replace purple, blistering, defective and unsightly window films. Please stop in with your vehicle for a free estimate. The NEW Langlois 279 McArthur ave 613-744-1592