Color schemes serve two main purposes: achieving harmony and creating discordance. When you utilize harmonious color schemes correctly, it leads to a well-balanced image. Achieving balance in the image ensures that the flow of color remains uninterrupted, with no elements that disrupt the overall harmony of colors. When a new color is introduced into a color scheme that doesn't quite fit in, it creates a feeling of discordance. This discordance can serve to provide the audience's eyes with a res