Sooo my mom is kinda afraid of me being different?

What exactly is normal. What is normal for me may not be normal for you. Be yourself. Most teens and parents dont see eye to eye on anything. If you are comfortable with who you are then dont worry about what others think. If you are keeping your grades up then I dont see a problem with you doing those things. Hair dye and hair cuts grow out eventually so what does it hurt? But trust me, your mom will be better off not knowing about the bi part.