Decals are in silhouette and are easily transferred to windows, bumpers, or any flat surface. There is no background as the decal is transferred with light adhesive tape and removed only leaving the decal. Available in 47 colors (please see color patch). Additional colors are chrome, gold chrome, reflective white, and reflective red. Decals are made of outdoor durable vinyl with strong adhesive and can be ordered up to 12" in size. Please specify which color you would like in the PayPal comments section. For special orders larger or smaller, please send an email and I will provide instructions if the request is possible.