Color operates on a perceptual level.
Color emphasizes information and improves comprehension.
Color helps readers understand your message better by clarifying information, making it easy for readers to locate important information. Color helps separate the important from the unimportant. Words highlighted in color stand out as significant. Color helps focus the reader's attention on the most important part of the message. Studies show that information communicated in color is remembered better than the same information communicated in black and white.