TeenHealthFX realizes that you are concerned about the length of your clitoris, but we have some good news. There is no standard size established for how long a woman's clitoris should be, so yours may not be longer than the girl sitting next to you. The clitoris is the most sensitive spot in the female body because it is densely packed with extremely sensitive nerve endings. The organ exists solely for sexual pleasure and clitoral stimulation is usually necessary for a woman to achieve an orgasm.
The color of a woman's clitoris is dependent upon her skin tone. The normal range of color can be pink to very deep red, or even brown, so it is probably normal for yours to seem brown in color. However it is important for you to consult a physician if you feel that the coloration may be due to something else and especially if this area is causing you any type of discomfort. Don't worry, your body is constantly changing and it takes time to get used to!