I managed to finalize the painting and applied to decals to the FRH wagon I was working on late last year. I applied a coat of etch primer and then a coat of grey enamel over that from an aerosol can. I can’t remember applying the top coat to many models with an aerosol enamel in my time modelling. The paint was full gloss and the reason I used an aerosol can is that at the moment using my compressor and air brush is a bit difficult, especially at night with only limited time to set up. I purchased the cans I used for the top coat from Bunnings and looking at this photo my judgement is that the colour is a couple of shades lighter than that which is on the cap. I need a dark charcoal grey and this is a mid grey and not really dark enough.
Other than the shade of grey this test was reasonably successful. The paint covered well, it was convenient to use, retailed for about $8 a can and there’s probably enough left in the can to do about two more wagons. I used a full gloss which provided a great base for the decals (available from O-Aust) and then I dulled this down with Dullcoat. This also came out of an aerosol can. I’m not all that concerned about the lightish colour, I can darken it down with some Weathered black and powders. I’d like to track down a darker full gloss spray enamel in an aerosol so anyone with a suggestion is welcome to post a comment.