Help With Tracking Down A Color.

So as a side project I am working on a Butcherhorde theme Chaos army. Each squad has a different color set up to show they are a mess of different warbands.

I have been trying to find a Rusty/Brass/Orange Color for the base of on of my upcoming squads but I am having a hard time trying tracking down a color that works.

Nothing in the GW line or the P3 line match what i'm looking for in my mind.

A Rusty orange brass color.... anyone know something that would fit the bill?

How deep a colour? Would a thin coat of Runelord Brass over Martian Ironearth with dabs of Typhus Corrosion or something work? No idea, just spitballing really...