As it seems everybody has some Wolf's Dragoons or at least knows someone who should have. But usually it is the Wolfspider Bataillon, black with red details.
When i faced the typical WD mechs in my inventory (something like a Firefly or an Annihilator), i decided not to paint more Wolfspiders. I wanted a different paint scheme and ended with Alpha regiments redish/rust brown with black highlights. Some say it is Wolfspiders inverted, but i like it as a different scheme.
The company composition is based primarly on the minis available at the time, so a Marauder II or Gallowglas were not included as they were already painted as part of other units. Other mechs were added if they were known to be of mercenary heritage in order to complete an entire company. Painting took long enough (estimated 2 1/2 years...), but finally it is gameready...