Lots of Spaz Stix artist's know that most paint colors are semitransparent and need to be backed. That's why Spaz Stix Paints provides you with our Solid White Backer to keep your fluorescents and solid colors BRIGHT and bleed-through free. Every color should be backed, always especially if you want a paint job that looks great! Otherwise your yellow and blue paint scheme may turn out to be shades of green. White backer will keep you colors as you intended while brightening them up and never dulling them out.