I did this a while ago, just like many others I was dissapointed in the bad paint apps Hasbro gave this guy and with the superior Wal-mart exclusive 6 inchers they just made it look like poo poo next to them. So I repainted it, I based it off the look from the hot toys version. I based it flat black, dry brushed aluminum, and silver, and some gold for rusting effects. I painted some details in the wiring. I removed the flame thrower thingy it came with and sculpted a smaller one like the 3.75 version, and also sculpted the red missile launch button. I also enlarged the eyes, I thought they looked too small,and painted the gas tank. Also went ahead and painted the unarmored arm parts where it's suppose to be cloth. Now it just looks perfect next to the other 6 inchers. I also made a custom Mark II, so check that one out if you'd like.