I did this for a group project at Commando Customs and just tweaked the bio to fit into my Sigmaverse.  I really like this custom for some reason.  Something about Lt. Stone that just rocks.

Base Figure: Lt. Stone
Accessories: Lt. Stone belt, guns, holster / Arctic Snake-Eyes vest / 1/6 scale rifle

With a nice coat of white Krylon Fusion paint and some red accents, my arctic Lt. Stone was a nice change from the dark uniform he usually wears.  The Arctic Snake-Eyes vest looks really good and the chest holster fit perfectly into one of the peg holes so I could keep that look from the v.1 figure.

Code Name: Lt. Stone
Real Name: Stone, first name unknown
Special Operations

Primary Military Specialty: Espionage and infiltration
Secondary Military Specialty: Dragonhawk pilot

Lt. Stone has seen active duty all over the world, from the jungles of South America to the deserts of Africa.  For most of these operations his standard Sigma Suit is sufficient however when he ventures into the arctic he wears a special suit designed for the harsh temperatures.  It features the same technology as the standard Sigma Suit but has been adapted to preserve body heat.  Combined with the specialized tactical vest and his trusty sidearms, Lt. Stone's arctic gear is exactly what he needs to accomplish his missions in the arctic.

Duke: "I've known Stone for years and his ability to adapt to whatever environment he's sent to is truly inspiring.  Whether he's asked to trudge through 100 plus degrees in the jungle or in freezing temperatures knee-deep in the snow, he always manages to get the job done flawlessly and without complaints."