personally i would go for a full door re-spray the greens a dodgy colour to touch up, and have you got the time to do it.
you could touch it up try it and see.
but if you do touch it up leave it to dry for a couple of days the at the lacquer it then leave that for a week or so.
get some G3 polish on it thats what i used when i did my rust and see how it looks
make sure its not a damp day or a cold one above 15 degrees c or above
hope this helps