I love a good red wine. It is made from dark-colored grapes.
Does that mean that white wine is made from light colored grapes? 
Yes, it is made mainly from "white" grapes, which are typically green and yellow.
That makes sense. Do you know anything else about the winemaking process? Do people really stomp on grapes with their feet to get juice out?
Pressing (wine)
Pressing in winemaking is the process where the juice is extracted from the grapes with the aid of a wine press, by hand, or even by the weight of the grape berries and clusters. Historically, intact grape clusters were trodden by feet but in most wineries today the grapes are sent through a crusher/destemmer, which removes the individual grape berries from the stems and breaks the skins, releasing some juice, prior to being pressed. There are exceptions, such as the case of sparkling wine
teinturier varieties, which actually have red flesh and produce red juice.
Variants White wine.
Fermentation of the non-colored grape pulp produces white wine. The grapes from which white wine is produced are typically green or yellow. Some varieties are well-known, such as the Chardonnay, Sauvignon, and Riesling. Other white wines are blended from multiple varieties; Tokay, Sherry, and Sauternes are examples of these. Dark-skinned grapes may be used to produce white wine if the wine-maker is careful not