I love all the classic colors, blacks, browns, beige, neutrals, etc. For a classic look, wear all black with a pop of color. Red lips are still so hot right now! It is a great way to make an outfit pop. Throw in another neutral color with your solid. I wore a camel wool fedora for my accent with a cute wool jacket. Online its saying $39 but I picked it up at Old Navy for only $16. In store sales are almost always better!
Hat: Nordstrom last year (similar here)
Shirt: F21
Denim: AG Jeans (here) AG makes best jeans ever!
Shoes: Target (here)
Jacket: Old Navy (similar here)
Necklace: F21
Bracelet: Aldo
Lips: Sephora Liner: The Red Lipstick: Hot Tango