Windows of varying sizes and trimmed in a variety of colors are scattered across the plant s surface. It is in much the same vein of Simon Rodia's Watts Towers. Broken bits of ceramic tile are inlaid in asymmetrical patterns around the base of the smokestack conglomerate around many of the windows. It is not surprising to discover that Hundertwasser admired the Watts Towers and considered Rodia's artwork as exemplary and healthful. The windows are of metal-coated glass in hues of blue, red, gold, silver, and copper.
Some windows are transparent and others are made from milk glass.
All parts that point towards the sky are blue. Yellow is used as an accent color particularly on the oil tanks and on the building s lower portions. A large golden sphere has made the plant a landmark visible from miles away. Placed atop a blue and red-tiled tower, the sphere is functional and actually shelters measuring mechanisms within the plant. More than 300 feet above the ground, the sphere itself is about 58 feet tall with a surface area of more than 3,600 square feet covered with 1,150 gold enamel plates.