Brown Kraft has the option to add white ink as an overprint. The white will be a base for the CMYK providing a bright white surface that will allow for vibrant, crisp color. Areas without white ink will appear darker due to the color of the stock. Similar to Spot UV masks, White Mask files are separate from your artwork files. Black in the White Mask file indicates where white ink will be printed. Make sure to create your mask file the same size as your artwork file. This will prevent alignment issues during printing. NOTE: White Masks must be made in vector format and be saved as EPS or PDF. Please be aware that anything less than 100% K will be transparent and allow the brown stock to show through. Use vector paths/shapes to create black color areas that will indicate where the white ink base will go. The rest of the areas will show the Brown Kraft stock.