What a pretty girl. I would say her skin tone is a medium olive with reddish undertones. I would suggest just a few shades lighter yet staying in the brown family. A neutral brown would look great on her while flattering her features and coloring and providing her with a different look all at the same time! She can even leave out a few strands of her current darker shade for contrast and dimension.

Warm refers to there being more yellow in the skin, than pink.

by warm undertone...do you mean; golden, yellow, red, or olive?

by warm undertone do you mean...golden,yellow,or olive? because they all fall into this catagory.

She has medium skin tone, so she should dye her hair chocolate brown, mahagoney or maybe black.

Your friend is medium. She has a warm undertone which means she can rock some gorgeous browns. Try a golden brown, warm coffee brown, or a black color.

She has a medium complexion .

Your friend has a medium to dark complexion with warm undertones. Basically her skin is medium during the winter, but probably becomes very dark in the Summer. She'd look great with some carmel highlites:)