I also went to the Uxbridge where they supply craftmaster paint and talked about colours and quantities and ordering times. Interestingly, when I revealed our chosen colour scheme, the lady in the shop said it was exactly what they were planning for their new boat!.
Here is a view I knocked up in Google sketchup.
I say knocked up as though it was casual. Actually it wasn't easy and took me ages, but it gives some idea of how the boat might look. You can see the rear deck area plainly here. I think I might do some part of it in the light grey to break it up a bit.
Here's another view.