Bloody gorgeous, Dave!
Nothing else I can say really.
The stain & varnish is beautiful.
Colour suggestion? First is leave it as it is, then maybe metallic gold/manganese. The blue works well with the stained ply. I wouldn't go white or black. Maybe even one of those two tone paints that change colour in different directions. If you're going to go to so much trouble then make a statement. You can always have it sprayed to look like a cannon, laser or rocket. The last two would really endear you to the Spooks if you take it to a public place!
