Do you have vinyl with blue backing?

All Oracal vinyls have a custom blue silicone paper liner for matte white and gloss white. This provides superior contrast for cutting and weeding and thanks to its proprietary formulation and construction, ORACAL Series 651 has become the industry standard for high-performance calendared films. At only 2.5 mils thick, ORACAL 651 offers six-year outdoor durability, flexibility, thermal print compatibility, and a choice of 60 high-gloss colors as well as transparent. This high-quality film is a good choice for moderately complex jobs that don't require the extra conform-ability provided by cast films.