How do I highlight my hair without using dye?

I was born with dark black hair and I want to lighten it to dark brown,i seemed to have gotten my temples to dark brown.I use lemon juice,but i always condition it afterwards.I sit in the sun for 15 minutes,and how much longer should i sit? I want my results to be that my hair is a brown/black color when seen in light.

HELP?!How do I highlight my hair without using dye?
Yeah, lemon juice usually works really well but you should try sitting in the sun longer than 15 minutes. Maybe try 30. Or you can buy this stuff called Sun-In. It's relatively cheap, and it works better than lemon juice. All you have to do is spray it in your hair and sit outside.