Green Goblin had manufactured the suit and pumpkin bombs himself, but he stole the glider prototype from a government facility. The boots which do not match his outfit came with the glider, which are needed to operate it. Also, he spray painted the glider for a little personal flavor.
thank you, but i did that break on purpose, my thinking was that he actually did not own the technology, so he stole military gliders, along with the boots that he needs to wear to control it so it was a clash between his rough and poor look with high tech weaponry, and thats why he spraypainted it
...i guess i should include these in the description lol