Some variations of the colour red are: Pigment red, munsell red, pantone red, crayola red, imperial red, red G&S, Desire, lust, ruby, crimson, rusty red, fire engine red, cardinal, cornell red, fire brick, dark red, maroon, barn red.
Purple is a secondary color resulting of the mixture of red and blue on equal amount. There are some variations of tones on the purple color. If you add white to purple you'll get the violet color, which has tonal variations as well.
molecular structures
a white pupil, different colored pupil in eye like red with other variations, red and painful eyes, and changes in color of the iris.
Smoky Red is one variation of the red fox. This variation of red fox has black on its paws.
The Simpson Desert sand is a rich red-orange-brown colour, but there are variations in the hues.
No, red dolphins are not real. Dolphins are typically grey or light brown in color, with variations such as white or pink albino dolphins.
Your breeding would be crossing those specimens that are both shorter and have more red color.
The flower color of Erythrina crista-galli, commonly known as the cockspur coral tree, is typically bright red. However, there may be cultivars or variations with different flower colors, such as pink or white.
There are different qualities and color variations of peridot. Some are a light greenish yellow, but they can vary to a lime or even olive color.
No, some can have a red color to them, but most igneous rocks tend to be a gray or black color.
red is the first color in the rainbow. Some people think it is purple/violet but is not.
My guess would be that humans have a special mental sensitivity to pink (and variations of red) for social reasons. i.e. blood, skin color.