Due to their iridized nature, the color of Giorbello Atlantis glass tiles changes under different types of light and depends upon the viewing angle. When seen under a florescent light Orange Marmalade is red-orange. In direct sunlight, the color appears to be a deep orange. When looked at under an incandescent light, the color is dark orange with flashes of red revealed in the iridescence of the tiles. These tiles are made by treating the glass with metal oxides to give them their iridized effect. These glass tiles are fade and frost resistant.