My personal way of doing gold is Gehenna's gold (you may want to do balthasar and then layer up with genhenna's for a more even coats) then wash Agrax earthshade then nuln oil in recesses if you want a dirty gold (like for chaos or something) or just Seraphim Sepia for clean gold (like tomb kings) then layer gehenna's gold again leaving recess. Finally Highlight Auric armour gold for basic dude, and if you want a particularly regal shiny gold then highlight runefang steel.
I find it works really nicely and gives a clear contrast between edges, mid and recesses and can easily be modified for a special HQ or a different type of unit etc.
Me: To be honest im amazed there isn't a chaos god of not revising or at least chaos god of procrastination
MidnightSun: There will be, when enough people do it. Y'know when the Eldar were all engaging in their hedonism and Slaanesh ripped open the Eye of Terror with his creation? Slaanesh will have NOTHING on the God of Procrastination, and his vile minions will carve the galaxy asunder in a thousand year reign of blood.... Tomorrow