I would call Hair Cuttery and see if they can do the color you want.

How about box dye at home??

Hey folks, my 11 year old wants to dye the tips of her (dark) hair for her birthday. Any suggestions of a place good with kids and relatively reasonably priced near Burke/Fairfax/Fairfax City? Ideally not with a long wait, this mamma is not good at planning ahead.