This liquid, regardless of the color of the source grape, typically has an amber hue. When the grape juice is placed with the stem, seeds and skin from red grapes in vats, the juice darkens to a red tone. The tannins and colors bleed into the juice, called maceration. When making white wine, the grape s juice is kept apart from its skin, stem and seeds. To make ros s a hybrid between reds and whites the juice is macerated for only a few hours.
Wine colors change with age.
They also help the wine develop and age gracefully over time by acting as a natural preservative. As wines age, red wines lose color and white wines gain color. A wine is only as good as its grape. Get to know the grape, and you get to know the wine. The different varieties of grapes grown in different vineyards across the globe are called varietals .