What group of natural pigments affects the color of the hair and skin?

More Questions:

Which alphabet consists of just dots?

This drink is made from espresso coffee, hot milk and chocolate?

Mean Joe Greene helped what team win four Super Bowls?

In golf, what is the traditional name for a number 3 wood?

What soft drink, introduced in 1982, was the number three US seller within two years?

What candy used the ad slogan "Get the sensation"?

What position did football hall-of-famer Dick Butkus play with the Chicago Bears?

What hero of Wagner's "Ring" opera cycle slays the dragon Fafner?

According to the nursery rhyme, Winken, Blinken and Nod sailed in a "what"?

What Mexican border city is located south of San Diego?

Where in Egypt is the Tomb of Tutankhamen?

Under what brand name does Roche market the sedative diazepam?

Jaundice tends to turn one's skin, and sometimes the whites of the eyes, what color?

Who had the fingers on his left hand glued together to make his disability look more real in the movie "The Usual Suspects"?

Who starred as the male lead in the Alfred Hitchcock film "To Catch a Thief"?