Evolution of human colour vision similar. Tritanopes are missing the short wavelength sensitive opsins and see short wavelength colours in a green hue and dim compared to other colours. They may also see some short wavelength colours as black. Other perception problems include distinguishing yellow from pink or purple colours being perceived as shades of red. Researchers have found that trichromacy has advantages over dichromacy or anomalous trichromacy at further distances. This is believed to occur because visual cues such as shape decrease for colour vision as distance increases for targets of a smaller size. Using tests for spotting fruit pieces in bushes at distances
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.