Of course, the most popular color for gold is its natural shade of yellow. The yellow gold used in jewelry is usually alloyed with copper and silver.   There's cool white gold, very popular on the fashion scene right now, that is created using a higher percentage of nickel or palladium alloy, zinc and copper. Women are attracted to white gold for its hip, modern flair.   Alloying copper with gold creates rose gold. The added copper gives it a blush-like tint, which lends a soft, flattering effect to the skin.   A blend of silver, copper and zinc gives us green gold.   All these color options give a woman choice. Styles that combine white and yellow gold make a bold statement, while individual white and rose gold pieces can be mixed with classic yellow gold for an eclectic fashion flavor.