for paint look up the honda colour codes.
I heat the soldering iron and dab the 2 ends of the crack first to give it strength,then work my way along the crack folding the hot plastic over the crack, do this on both sides and you should get a good strong joint,if you want to you can melt cable ties in to give more plastic.When your done you will need to use a filler and sand to get a nice smooth surface.
If your fairly used to using a soldering iron its not that hard.
"R-258 Winning red" is honda red for the sp1
not sure on the stickers ?