The moldable plastics ranged in shape and color. The majority of moldable plastic products were ellipsoid resin pellets. Visually, the pellets were indistinguishable from product to product (Figure ). One product was a thick sheet (Polly Plastic), and another was a filament (uxcell). All the products were opaque and white. However, upon detailed quantitative inspection by optical microscopy, morphometric and colorimetric differences were detected amongst the pellets in their projected perimeter and area, circularity and aspect ratio, and hue, saturation, and brightness (Figures ).