Color pH indicators are usually complex organic molecules that are weak acids or bases. Which of the following statements seems reasonable given your understanding of this topic? All pH indicators switch colors at the same pH. When used in a titration, a color indicator is chosen that will switch from one color to another before the equivalence point is reached. A pH color indicator molecule interacts with light dependent on chemical structure, switching from one structure when protonated (acidic hydrogen attached) to another structure when de-protonated