[Connolly3000]

Color coded pens from halfords... dab it lightly in layers though, then make the lacquer slightly excessive to the bonnet layer. Sand it down flush to the surrounding lacquer layer and once scuffed up a bit you should be able to polish out leaving no trace.
Keep in mind you will need very fine grit paper and leaving time for paints and lacquer to set properly, should take a couple of days in total

 

[Connolly3000]

Understandable, not having the confidence due to lack of experience on something makes you think you might fudge something up, I watched this guys steps in the video above and tried for myself. Was pretty impressed with the results and take your time, it'll turn out fine. If you know nothing of polishing, look that up also. I use foam pad, maguiers polish (literally a few dots) and keep wetting the surface area so the paint doesn't get too hot. It's easier when it's scuffed up to know when enough is enough because the scuffed up laqcuer will turn clear again and look smashing

Your call mate, I'm glad I tried it all out for myself

 

[Connolly3000]

For stone chips, no you will just need the chip repair kit that halfords do. It comes with primer, paint and lacquer pens with a really fine nib.
As for the above comment on clear film, Frost do it. It's a liquid wrap, for a bonnet you would definitely need a spray gun to apply.
Youtube - frost liquid wrap
It's literally rubber setting paint that you can peel off, great stuff, I have some in gunmetal grey. Though like I say, for a bonnet you would need a tub not a tin and a spray gun to apply