Time to dump the flip flops and the T-shirts and disconsolately face the end of summer's Casual Fridays. Back-to-work season means more formal dressing. (Read: Break out the ties.) If you're still lusting for summer, though, transition through fall with brighter, pastel-y neckwear, before you start sporting the winter Repps and bold, jewel colors. A few ideas for tying the (Windsor) knot here.