VQ Boys Performance Window Banner and decals- Backing Color is only for full banners. If the "Text Only" banner is selected, backing color will be ignored.This is a die-cut vinyl decal meaning there is no background, only the design shown in black. Vinyl decals are 100% waterproof. Size refers to horizontal length. You can view our color chart here: https://spinnywhoosh.com/pages/color-chart.