Painting my DW prussians is rather easy.
Step 1: prime in black (my case GW chaos black)
step 2: Base coat all but deck in GW Codex grey
step 3: paint wooden bits in GW graveyard earth
step 4: Guns and metal decking and other misc bits painted in GW chainmail
step 5: wash metal bits except for guns and the hull in GW badab black, paint guns GW burnished gold along with other details
step 6: wash deck with GW gryphon sepia
Step 7: squadron marks to taste
step 8: magnetize turrets.
Hope you find this usefull. will finish updating squad colors and fighter colors in the future