My guess is they just turned it off specially for that preview pic, they get to break a lot of rules for such things after all.

I'm sure their very competent artists can see for themselves that the toolbox wouldn't mesh well with that look. There's a reason I only wear the Saurian Tabard dyed metallic silver, there's nothing else in the game that matches the gold and silver on the toolbox (you can only dye the silver parts).

I'm a fan of our Midas gearset though, it looks like a nice brown and gold palette and I'm looking forward to collecting it.