Evolution of human colour vision as 'visual purple' receptor proteins, are encoded by Rh1, OPN2 and RHO genes. They are characterized by extreme sensitivity to light and enable monochromatic human vision in low light or dim conditions. They are broken down into retinal and opsin when exposed to these conditions. Humans have 3 types of photopsin proteins found in the cone cells. Long Wavelength Sensitive Opsin (Red cone opsin) – Encoded by the OPN1LW gene with a λmax of 560 that is found in the yellow-green electromagnetic spectrum despite its name. Its sensitivity to the colour red is still known to be higher than the
The Colour Out of Space of his stylistically and conceptually finest short stories." Joshi praises the work as one of Lovecraft's best and most frightening, particularly for the vagueness of the description of the story's eponymous horror. He also lauded the work as Lovecraft's most successful attempt to create something entirely outside of the human experience, as the creature's motive (if any) is unknown and it is impossible to discern whether or not the "colour" is emotional, moral, or even conscious. His only criticism is that it is "just a little too long". The text of "The Colour Out of Space", like many of Lovecraft's