Top 10 colors facts

A female. This kind of coat coloring, which combines two colors other than white (black and red in this case), is known as tortoiseshell, and it is found almost exclusively in female cats. This is because the X chromosome determines the color of the cat, and there are no color genes in Y chromosome. Thus, female cats with XX chromosomes may be three colored (including white), while male cats with XY chromosomes cannot. (with the exception of very rare XXY sterile males).

Blue. Both squids and octopuses have blue blood. They use an oxygen-carrying molecule in their blood called hemocyanin that contains copper. In cold conditions with low oxygen pressure, hemocyanin oxygen transportation is more efficient than haemoglobin oxygen transportation.

It is gypsum. White Sands, having 442 total square kilometers of dune fields, is the world's largest surface deposit of gypsum. Unlike other desert sands, it is cool to the touch, due to the high rate of evaporation of surface moisture and the fact that the sands reflect, rather than absorb, the sun's rays.

Men. It is much less likely for a woman to be red-green colorblind than a man, since this common type of color blindness is caused by a recessive gene in the X chromosome. For a woman, both of her X chromosomes would have to be affected. A man only has one X chromosome, so he is more likely to be color-blind.

Siberian Husky. Siberian Huskies are known for blue eyes. They commonly have one more unusual trait called heterochromia - a difference in iris coloration between the left and the right eye.

Germany. For decades until the introduction of sponsorship liveries, each country had its traditional color in automobile racing. Italian race cars were red (still used by Ferrari), British ones green, and French blue. Today, Mercedes-Benz Formula One cars are also silver.

Rayleigh scattering, named after the British physicist Lord Rayleigh (John William Strutt), is an elastic scattering of light or other electromagnetic radiation by particles much smaller than the wavelength of the radiation.

Tetrachromat. Man is usually sensitive to about 500,000 colors. Tetrachromacy is the condition of possessing four independent channels for conveying color information, or possessing four types of cone cells in the eye. Organisms with tetrachromacy are called tetrachromats which can see up to 99 million shades.

Chromium. The name of chromium means colour in Greek. Its compounds are used as pigments, including chrome yellow which had been used to paint school buses and chromium oxides used as a green color in glassmaking. Natural rubies are colored red due to chromium ions.

To reduce solar heating. Since fiberglass resin softens at high temperatures, white is used almost universally to reduce the temperature rise caused by solar heating. Less popular non-fiberglass gliders (those made of aluminum and wood) can be painted any color.