There are plenty of combination of colors that you can get from the Balayage hair coloring technique alone. Balayage on its own can be done with just balayage texturizing without the bleach/lightener, with bleach and lightener, to create colorful result, to get silver or pastel.

From these 5 types, balayage without bleach/lightener, balayage with bleach/lightener, and colorful balayage is the most basic one and can be done in a single session.