Hi Kris- had been a bit through the Internet, The TÖN is a typical Krabbenkutter, which will be used just in the Northsea. Though if you go GOOGLE and you type in "Krabbenkutter Nordsee" you will find lots of photographs which may give you a clue about used colour schemes. I have had a try- looks really fine (but was too much to list).
Hope this was out of any help,
Jörg