30 Jun 2008 at 02:59 - 2
The color effect of the dyes are different for each type of armor.
The only ways to get a gold look would seem to be Yellow+Silver or Yellow+White, might take you more then one yellow, silver, or white, to get the best combination for your armor, so buy 3 of each and start trying combos. If your short on money, buy the whites last (try yellow+silver combinations and if that doesn't work just buy one white, try that, then two etc. etc.)
Hope this helps.