Perhaps the most evocative fatal fashion trend of the 19th century is the color green. Before inventor Carl Wilhelm Scheele came along near the end of the 18th century, there was no color fast green, only the option to do a blue overlay with yellow or vice versa. By mixing arsenic and copper, Scheele developed a pigment that would hold, whether in wallpaper, paintings, or clothing. It also happened to look fantastic under natural and new gas light, an important duality for the time. By the mid-19th century, when, as Matthews David notes “nature was disappearing from the environment,” this “Emerald Green” was incredibly popular in artificial flowers. – from Fatal Victorian Fashion and the Allure of the Poison Garment