Thanks guys! For "gold" I went from rhinox hide (maybe even with some black) , thru averland sunset, sunburst yellow and finished with almost pure ceramite white. For silver I have used mechanicus standart grey, administratum grey and agin almost pure white. Cant really remember every layer though...
I'm really looking forward to painting Karl Franz, Marius Leitdorf, Kurt Helborg and couple more classic heroes of the empire from @Warlord, but I'm waiting for more detailed informations about the scheme