Hi!
Colors - Red, browns, and greys. Beige is also the nail color for the fall.
Shirts - Plaid, army jackets, loose tee shirts, boyfriend shirts.
Pants - Tight jeans, mostly. Sweatpants are fall, too.
Skirts - Anything but mini skirts (unless you're partying), jean skirts & leggings.
Scarves - ALL scarves are in this fall. :O
Hats - Knit, wool, pull over hats. Not sporty ones.

Jewelry - Big jewelry, large bracelets, necklaces.
Tights - Usually yes with skirts and long shirts. Dark grey tights, not neon or anything.
Shoes - Ballet flats, boots, no sandals, Converse. Mostly ballet flats.
Hope that helps. ;P