hey

hey i just joined beacuse i have a question and every where i look i cant find an answer. i spend alot of time in the sun, between running track and going to the beach, my hair gets really light from the sun. my hair is already a brown-light brown color and it just keeps getting lighter almost blonde. so i colored my hair a dark bron thing that way as time goes on my hair will just get light like it has before, that wasnt the case. no i have terrible roots and a greenish tint to my hair. ive read and heard about "strripping hair" but cant find any info on it. how do i get my natural color back without doing any more damage?

thanks soo mcuh!