Immortal Flames Colourset Tweak

It always bothered me that the Immortal Flames basic armour got the short end of the stick as far as colour schemes are concerned. Gridania gets earthy yellow-and-brown tones, Limsa gets visually striking red and black... and Ul'dah, the so-called "jewel of the desert", gets some weird mishmash of grey-blue and olive and brown.

So I'm fixing that!

The greyish-blue of the main overcoat is now much closer to true black than before, and the buckles are now as close as I can get to the brassy metal used on the hat. The olive green hat, boots, and gloves are now dark brown, matching the trim on the Officer's Overcoat.