My best friends mom thinks im a bad influence?

I really hate it because my friends mom says im a bad influence on my friend. Its only because I have weird colored hair (a mohawk), dress in leather jackets and band t-shirts (not from Hot Topic xD hahaha) and ripped jeans and leggings. Im also considered a bad influence because I dont get straight A's, dont believe in God, go to concerts and listen to whatever her mom calls "satanic" (Motley Crue, The Misfits, Sex Pistols, Iron Maiden, Joan Jett, The Clash, Siouxsie and the Banshees, The Ramones, Rancid, Operation Ivy and waaaay more.) pshhh my music isnt even satanic. But yeah...i really hate my friends mom and she hates me too. What should I do?