Their products are, as it says in their name, 100 % pure, especially thanks to various pigments derived from natural fruit. (eluxemagazine.com)
Below are representaions of various pigments mixed into The Old Fashioned Milk Paint Company Milk Paint Base. (earthpigments.com)
Digital printers use inkjet or laser printers that deposit various pigments onto many different mediums including paper, glass, metal, canvas, photo paper, and many other items. (smallbusinessesdoitbetter.com)