Great start on your build, which is understandably not without its problems and will need lots of elbow grease and hard yakka. But at least you have a good foundation to work on, as the deck looks in pretty good nick.
Paul, I have found the same green paint coming through blue on some SC mowers. I have only seen one older KXD which was more greenish than blue. I wonder if this was an early colour that was over-painted, or if the overpainting was done for some other reason. I have found KXDs with the blade discs painted green. The original colour of the frame was like an aquamarine, not perfectly blue, but had a slightly greenish hue. Kind of like a Whitsunday's ocean colour. I have never been able to replicate it exactly, so have just gone with straight blue hammertone. Blue really gives these mowers a lift.