Most garage door manufactures make 5 main colors for their garage doors. Starting with the most common colors first. White, Almond, Brown, Sandstone and Grey. They do not always keep some of these colors in stock.
White and almond are always in stock and sometimes brown.
Grey and sandstone will probably have to be ordered. The newest color trend is wood grain paint that is made to look exactly like a wood panel door that is stained and finished. They are becoming very popular and you can now find these color types in stock.