I want a hair color besides brown. But my mom REFUSES to cooperate.?

My natural color is brown and everyone of my friends dyes their hair. I feel left out. I used to dye mine all the time but recently my mom told me it pisses her off when I talk about my hair color. She says "there are cancer patients out there that would be lucky to have hair!!" But she doesn't get how much I hate my hair color and I do cry about it. I feel ugly...I have nothing but cool hair and without it I am truely nothing. I don't care I just want to redye it and she keeps telling me I am being selfish and annoying everytime I bring it up. She dyes her hair and she's being selfish because she won't hear me out. I have nice grades and do all my chores but yet...nothing. I once snuck out and dyed it blonde without her permission and she went pyscho and took EVERYTHING away from me. Turned off my service, locked the internet router, and wouldn't let me out of the house cept for school. I HATE MY HAIR COLOR! BROWIN IS SO UGLY ON ME. HELP ME WHAT DO I DO?