Not so sure about the red on plutom, somehow I feel a lighter less flashy colour would have suited him better. But that is just my opinion of course.
I know what you mean, I was in two minds about the red too.
However as the other Priests have it and I was running out of painting time, I stayed with it.
The copper is actually Vallejo 'Model Colour' Bronze, I find it is perfect for all things Steampunky.