Today modern darkrooms usually use an amber safelight. Espada is known for his work in photography's physical as well as its digital darkrooms. Darkrooms have been used since the inception of photography in the early 19th century. Other applications of darkrooms include the use in nondestructive testing, such as magnetic particle inspection. Low-pressure sodium vapour lamps sometimes are used in larger industrial darkrooms. The song, "Darkrooms" is also a bonus track for the Japanese edition. Previously, he had borrowed other darkrooms or worked only when he was at Lake George.