When printing on dark colored garments, it is best to use a white underbase so the colors are represented accurately. Without a white underbase colors may appear darker due to the garment color. White and other light color garments can be applied directly without the need of a white underbase.The UMX Quart Kit includes 17 colors in quart containers, and 1 gallon of UMX Mixing White.Click here to access our free, easy to use color matching software! *New users must first register and verify their email address. Once the email has been verified we will confirm you are an actual user of this ink system and then grant you access to the software.