Can white wine be made from red grapes?

Yes! The color of wine comes entirely from the grape skin. When the skins of red grapes are removed early in the winemaking process, their color does not affect the wine's appearance. For example, this New Year's Eve you might have been drinking champagne made from Pinot Noir grapes...however, the winemaker did not let the skins of the red Pinot Noir grapes have contact with the clear grape juice, hence your champage was not turned pink or red by the color pigments found in the skins.