The perfect accent to a neutral camel coat or olive utiliarian look has got to be leopard. You can point to the influence of the 1950's in fashion, as well as Mad Men style making you mad for this. The greatest thing about leopard is that it works all the time. It's very sexy and very dangerous.
I like this cardigan from Ann Taylor paired with a nice, fitted black dress or a tank top with a pencil skirt. It gives you a very pulled together, elegant and chic look that really won't ever go out of style. Camel, beige and nude are usually considered neutrals, but somehow this comes along and works with everything too.
It's a great accent to the olive military trend as well. Belt the cardigan around the waist and mix with a olive green skirt and that's a great way to merge two hot trends together.
I also love leopard accents and accessories. If you're going to make one big trend purchase, it could be a leopard bag, a high heel, a flat ballerina, a scarf (like Jessica Alba here) or a printed belt. If you love things that are understated, then go for a small leopard piece. If you're a catwoman, spring for a faux fur. There is truly something for everyone - just make sure you snap it up before it flies out of the stores!