Natural black (A): A dark black hair color, perfect for girls with black hair or those who have dyed their hair black. Black-brown (B): A more natural black, appearing brown in the sunlight, suitable for most girls' hair colors, and very natural-looking. Dark brown (C): The color is a slightly dark red, similar to the color of chestnut shells. Light brown (D): Suitable for girls with yellowish hair or those who have dyed their hair a linen color.