Valances of Vertical blinds are often chosen to enhance the overall appearance of the vertical blinds. They come in various styles, materials, and colors, allowing homeowners to match them with their decor and personal preferences. 3 Channel Panel Valance. Vinyl valances of Vertical blinds are available in a variety of colors and finishes to complement your interior decor. The valances are typically designed to snap or clip onto the headrail of the vertical blinds. Installation is relatively straightforward and usually requires no special tools. And Vertical valance returns are optional.