They don't
Every night of the year.
No some countries like Africa where darker skinned peoples are indiginous are above it.
Because of natural selection, most of the light-colored mice live on light rocks, while most dark-colored mice live on dark lava rocks.
No, people with a dark skin tone are located closer to the equator whereas people with lighter skin tomes may be found furthur from the equator or in other words far north or south.
Mercury is grayish/whitish color, or a dark gray!
dark dark
No, God didn't snap his fingers and create white people because he thought black people needed masters. Skin color is a reflection of where people live (or where their ancestors lived) in relation to the equator.
Dark skin
dark brown/black
Because it is a rich and dark color and a lot of people like it.
Every night of the year.
Incas had a dark brown to black hair color. Most people from exotic and southern countries possess very dark hair.
melanin
pink
No, color can not be seen in the dark. The only color that can be seen in the dark is black, because it is dark. If it is not completely dark then you might be able to see the color of some objects.
No some countries like Africa where darker skinned peoples are indiginous are above it.
Wear whatever color that suits your mood or whatever color you like.