Red is used as the common accent color for fall, which is great. It fits the weather and feels right.
We also love the orange puffy vest. What a great way to provide warm and give a pop of color on a dreary day. It's hard to be in a bad mood with an orange vest on.
The use of cords, cargos and flannels is very appropriate for the season and should provide a nice alternative to denim.
Another must have piece is the fingerless gloves. Why not get them in a nice bright color like red. Color is as important in fall as it is in spring.
Think rugged, think layers and think about colors. These options should provide some nice inspiration.