Hi Jamesd01
I know that this post is a bit late now, but what I always find easier is to do the colours at the end, because you might miss out some detail which you need to do. Especilally if it was black or grey. I think thats why the first time it went rather wrong as you said in an earlier post. It happend to me with my Nore Challenger tugboat when I wanted to add the tyres in but had to delet a whole set of colours. Your model looks grand though!
Captain T.