If it isn't too late, I like the second from the bottom on the left. It's plaid, which I think is cool and will always be what you picked for yourself, but the hues are subtle and blend in with the hide. I always like a bit understated.
The olive drab herringbone would be sweet. The khaki would be quite a contrast with the seal.
http://www.aheartlikeyours.com/shop...s/p/Herringbone--olive-drab-sku-MASF1841G.htm