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

More Questions:

What unusual ingredient is often included in a Gibson cocktail?

What is the official residence of the Lord Mayor of London?

What year marked the appearance of Doc Savage?

Which two states share a border with South Carolina?

The Gulf of Oman connects the Persian Gulf with what sea?

What is the city of Brotherly Love?

What five countries border Peru?

What Michael Keaton film gives mortals a peek into a Handbook for the Recently Deceased?

What actor was the narrator in the 2006 movie "Charlotte's Web"?

In the TV show "The Simpsons', what is the name of Fat Tony's establishment?

On what TV series did Katie Holmes first achieve stardom from 1998 to 2003?

Which actor had to swim for his life whilst filming The Beach in 1999?

Marvin Gaye started singing in the late 1950's as a member of what group?

What is Mark Wahlberg's famous nickname?

What are the two official languages of Guam?