We have many options for the Protium product line. For aesthetics for the aluminium parts we have Black and Silver and for the Reservoir Caps and Pump Tops we have Polished Acrylic, Frosted Acrylic and Acetyl. We are the only brand to provide a true polished acrylic option, all other brands only have machined acrylic. This is because polishing acrylic is difficult and expensive. I have always liked the look of fully transparent acrylic myself so it was an option we just had to have. You can also see from the photos how the new SC Premium Stop Fittings look on all three Reservoir Cap options.