Girls don't have to style themselves in that way to be different.
Likewise not all girls that aren't alternative are girly and love pink, they don't always wear the same things as almost every other girl etc etc.
For example, I like sport, I love my play station and spend a lot of time watching online streams as well as playing both Xbox and play station. I hate wearing heels and getting 'dolled up'. Most of the time I wear jeans, t'shirt, hoodie, trainers and a sock hat and Minimal make up (foundation and mascara). I also really enjoy doing outdoor things like off road driving etc, which isn't exactly boring.
Stop generalising all girls against 'alternative' girls.