Step 1 : Introduction to the question "What makes red wines red?"
...White grapes are never actually white in color; rather, there are lighter-skinned types such as green, yellow-green, light orange or gold. Likewise, black grapes are not actually black but are rather a red or deep blue, ranging from a deep indigo to a light ruby. The pulp inside is mostly water, with sugars and acids included. It is usually a grey color. The skin of the black grapes is what gives the red wine its distinctive color. The pigment transfers into the wine during the fermentation process when the skins are in the juice. Source: WineGeeks.com
