James,
You are more than welcome to ask as many questions as you feel you need too.
The U-Boot was painted using Tamiya colours. The colour that the modern German navy use to paint these boats is (in my opinion) a strange one, depending upon the light or angle the boat is viewed or photographed from it can look Brown, Grey/Brown, Grey or even Black. My friend Olaf in Hamburg told me they are finished in a Grey/Brown and a number of pictures seem to confirm what he says, plus I trust his word.
The main hull was painted using a mix of Tamiya XF-64 Red Brown mixed with a little NATO Black (I think that what I used, will check later and correct my statement if required) .
The anti slip walk way is the same colour but with more NATO black added so it also looks a different colour depending on light or angle.
The panel lines were initially post shaded, applying very thinned down NATO Black over the base colour , looked great ,but when the varnish was applied the effect disappeared so I used pastel chalks and varnished over these, you can see the effect.
The prop is finished using a Tamiya colour (Bronze) again with I think XF-64 Red Brown added.
Hope this helps.
PeteV 
