I want to colour code the boot lock as well, Is there anyway to open the boot from the inside so I can still use it while the paint dries?
Yes, the boot lock just pushes and pulls a metal rod,
so if you climb into the back you can push or pull it yourself. (can't remember which one opens)
If you have a spare day or afternoon, you can get all the spraying and lacquering done and refit it same day,
you just have to be very careful of the lacquer when putting it back in as it'll still be soft.
Also you don't need to key (sand) the button before painting as it's already a rough surface to begin with.
quick question, do you need to sand the diamonds down at all? sounds silly but havent done the diamonds before
All surfaces will need keying (roughing up) before any painting.
Just don't sand the individual layers of primer and paint, (even though you're meant to)
I did my first badge 3 times because even the lightest wet sanding wore through to the primer or plastic,
the 3rd time I didn't wet sand back any of the layers and it worked perfect,
so I did the rest like that and all is still well.