Signvec produces a range of color, thickness, and finish options for engraving materials that you can use to evaluate the color of engravings with engraving equipment. There are several ways to go about coloring with engraving tools, but the three most common ones are paint stick, paint fill, and oxidation.There are several kinds and colors of engraving material available. Black, white, red, blue, green, yellow, orange, purple, pink, brown, gray, and a plethora of other colors are available for selection.