After much thought, I decided to repaint the two-tier Monument. From its original of being all dark brown, I thought one species being bronze might look more regal. And I think it does.
I then tested on a three-tier Monument. Compared to an earlier piece looking colourful and very playful, the brown/bronze/brown version looks more serious and monumental. At the end of the day, there is no right or wrong to paint all these up.
Remarks