@Crazy Harborc: Hooray for old farts then! Where can we have a look at your pictures?
@tancrede: Thanks very much. I was opposed to the full metal look because it simply doesn't fit the army (and I'd rather have gaudy colours in an Empire army than large chunks of metal).
So here's yet another picture that shows hardly any progress:
I decided to just not do the yellow and black furnance. maybe I'll do the top a bit more colourful (hence why it's still yellow). Hope you like it!