Evolution of human colour vision that are found between 450 and 625. Individuals with various forms of colour blindness such as deuteranopia and protanopia are missing human middle wavelength sensitive or long wavelength sensitive opsins. Their minimum wavelength differences are <5 but only at around 500. Protanopes, who are missing long wavelength sensitive cones, are unable to distinguish between colours in the green-yellow-red section of the electromagnetic spectrum. They find yellow, red and orange colours to have much lower brightness when compared to a trichromat. The dimming of these colours can result in confusion in many cases, such as when attempting to identify red traffic
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