Is that grey really grey? It looks kind of olive to me. I wish I could see a non stock photo of the backpack. I really want it if its grey, not so much if its a dull green though.
spray paint is your friend
or google the model number to find pictures elsewhere
http://www.moteng.com/RR84-B40GRY-Bluff-Technical-Pack-Gray
http://www.ebay.com/p/Red-Rock-Outdoor-Gear-84-b40gry-Bluff-Technical-Pack-Gray/1853489585
spray paint is your friend
or google the model number to find pictures elsewhere
http://www.moteng.com/RR84-B40GRY-Bluff-Technical-Pack-Gray
http://www.ebay.com/p/Red-Rock-Outdoor-Gear-84-b40gry-Bluff-Technical-Pack-Gray/1853489585