Two-Color HDPE – Black on White – Inventables Textured sheet with layers of ntrasting lors ideal for engraving. Price. Part Number. Thickness. Dimensions. Quantity. $6.77. 30290-01. 1/4 in. lored Tinted HDPE Plastic Sheets – FDA, USDA, NSF Approved Thin Gage lored HDPE Polyethylene Sheets.