In the clear glass tops, such as shown, you can have standard clear (which is what you see above)- standard clear glass has a green tint, or you can have the crystal (less green) option. For backpainted glass, you can have any color you wish (based on RAL standard of colors)

hopefully this helps!!!

Hello Myradrew, The glass in the picture is called Aqua. This countertop was done by ThinkGlass. They also have a low iron glass almost colourless called Crystal. You can see more picture at ThinkGlass.com

Starphire low-iron glass is made in America by PPG. In addition to being beautiful with even a small amount of ambient lightning, it is capable of producing LEED's points due to its highly recycled glass content. One company that uses PPG Starphire glass is DowningDesigns.com where you can view their gallery as well.