One of the most common misunderstandings of Chinese food is that soy sauce is in everything. It’s not! Further, nearly everyone that talks to me about making fried rice thinks there’s soy sauce in that (even if they know soy sauce is not in everything). There are many different types of fried rice so while the minority may contain soy sauce, the classic/basic version and most do not. Where does the brown color come from? It comes from frying the rice which browns it.
One of my all time favorite kinds of fried rice is Salted Fish and Chicken Fried Rice. Please do not put soy sauce in it.