When milk boils over on a gas stove why does the flame burn red orange?

When milk boils over on a gas stove, it can cause food particles and sugars to caramelize and burn, which contributes to a reddish-orange flame. Additionally, the presence of organic compounds in the milk can alter the combustion process, leading to a change in flame color. The accumulation of these substances can create incomplete combustion, resulting in a flame that appears more orange or red.