Silver ink files must be sent in a vector format. You must use a vector program, like Illustrator or InDesign, to call out the object you want in silver ink. To indicate the silver ink, you must set the object color to Pantone® 877 C. Any other color will not be accepted as silver. Remember, silver is a spot color and transparencies like drop shadows should be avoided. We recommend using 100% silver, however, we are able to print silver on a gradient and different percentages of silver.