Southern polyurethanes Intercoat Clear can be applied over an exisiting color to protect it or to aid in blending colors.  It can be used to aid in blending colors, application of effect solids (such as pears and flakes), as well as protecting graphics.  It is available in gallons or quarts and should only be reduced with SPI reducer or other high quality reducers at a 1:1 to 1:3 mix ratio.  It can be activated with any SPI Clear activator at 1oz per sprayable quart. Sand two coats in as little as 20 minutes.