Im 13 and not real girly so what top would be good but not too girly.
Graphic Tee, any tee really, sweater or hoodie on top if you'd like, or event just a pretty, delicate top and you could make it less girly by putting a hoodie over top of it.
Anything, really. Teal is a color that goes great with brown, so you could try a top in that color. Or you could wear a grey cardigan with a white tank top underneath and wrap a deep red scarf around your neck (adds flair to a simple outfit!)