Very Serious Dark skin complextion question.?

Now what I am about to ask. 1st off no I am not trolling, racist or being a pest. I'm not trying to be rude either. But today in School my friends & I where talking and what not. So we were talking about people being a certain color. Now this one girl is super black not trying to be funny or mean. Then the other girl was like carmel light brown. She was like " Yeah I'd hate to be that black " Then the other kids were like yeah I wish I stayed the same color as I did when I was a baby. Does this mean being brown or having a certain completion to your skin getting less wanted? Cause this isn't the 1st time I heard this. It just amazes me at how people really think being a lighter skin can be the extra beauty lift. Then again they were girls. Can someone please help?