How do i convince my parents

How do i convince my parents to let me wear eyeliner and painted nails to the school start? Theyre worried about me not making any friends but i think that if people judge me and chose not to be my friend bc of how i look then thats not the right kinda friends id want. Im just mad at them for asuming id care what the other kids think abt me, I’ve got an entire alt friendgroup outside of my school life and id be fine with just them, i don’t really want or need more friends (im 13 goding into Swedish highschool)