I'm not an expert on the matter, but if I were to pick the colors of fall, I'd pick grey, burgundy, camel, and maybe blush. (Honorable mention to mustard and leopard, but they're always contestants.)
This is one of my weekend "get together for coffee - but end up going home with things I don't need but really want like this sweatshirt (that finally made it to the clearance rack!!)" outfits. I purposely chose the pieces of this outfit because they are my chosen fall colors, and if the Weather Channel is correct, it's time to say goodbye to fall and hello to winter.
Tee: Gap | exact
Scarf: Forever 21 | exact
Cardigan (c/o Mom) : LOFT | similar
Jeans: LOFT | exact