Staring at the shield, and it's rather beautiful color if she were to admit, Evelyn blinked a few times before raising her hand. A rather, off topic question, but she was curious. "Professor, I have a question, rather off topic but...Why are spells such different colors? I know that some spells appearances depend on the witch or wizard like the patronus and such. Is it...the same for all the other spells? Like certain colors for certain groups of spells or the different power of them?" Seriously confusing herself.