Ok it's not a rattle can job but one done using the miniature 2hp compressor you see right there in the background. I also bought a used gun off ebay for £8.00 ($11.00) and away you go.
The paint used for this S2 was Mazda velocity red which is a modern 3 stage paint that is pretty close to the original colour. After doing the prep work a dull red base coat was added. (below)
Over that dull base goes a translucent mid coat containing mica to give it 'sparkle' and mimic the candy. Next came a coat of clear over which a set of RB decals are applied. The decals themselves are then clearcoated over.
Bada-Bing! Done deal.
Careful prep ensures a good finish. The paint cost somewhere around £100 including the primer, which means to do the whole paint set cost one quarter of the price of a professional job. For those that are looking for spot on originality then a pro-job is the way to go, for the rest of us then DIY isn't that difficult - for example this is only my second paint job. My equipment cost next to nothing, and where you see them in the top picture is where they were painted - no fancy spray booths just a single garage. Go for it!