Evolution of human colour vision other two human opsins. Middle Wavelength Sensitive Opsin (Green-sensitive opsin) – Encoded by the OPN1MW gene with a λmax of 530 found in the green region of the electromagnetic spectrum. Short Wavelength Sensitive Opsin (Blue opsin) – Encoded by the OPN1SW gene with a λmax of 430 found in the blue region of the electromagnetic spectrum. Certain parts of opsin genes and the vision of various species, including humans, has been known to change over time with different environmental changes. Recent studies have shown that primitive nocturnal mammalian ancestors had dichromatic vision consisting of UV–sensitive and red–sensitive traits. A change
Light and Colour (Goethe's Theory) – The Morning after the Deluge – Moses Writing the Book of Genesis painting is a reference to Goethe’s "Theory of Colour", which explains the colour yellow as being the first colour transmitted from light. The form of the painting is circular, symbolising the construction of the human eye, changing the focus of a typical linear splitting of space to a more subjective portrayal. The colour yellow is typically optimistic, but Turner captures the negativity of yellow by attaching the colour to a light that is subject to change. The morning sun aspect of the colour is something transient. "Light and Colour" was among three paintings stolen from a Frankfurt museum in 1994.