PaperStone Certified is a composite material that is made from 100% post-consumer recycled standard office paper. The Certified series has been certified by the Smartwood program of the Rainforest Alliance to FSC standards. The color of the finished panel is determined by the recycled paper type, the phenolic resin and the pigments and dyes that are used. Because of all of these factors and the natural tendency of phenolic resins to darken and 'yellow' over time, we cannot guarantee that colors will match precisely batch-to-batch. We have instead chosen to let the natural progression of aging proceed to produce an authentic product that matches to your expectation of what a natural product is supposed to do. PaperStone comes in the colors shown to suit any design style in the kitchen, bath or office.