I'll say, that the contrast paints are really valuable tools for quickly getting quick results which look good.
For both warband I started with grey deer spray coat.
For the iron golems, the skin is a single coat of space wolves grey. The armour was baaecoated runefang steel, and then painted with athermatic blue. The trim was painted shyish purple. I then used some washes overtop to make it look a bit dirty.
For the cypher lords, the skin is guillimen flesh, the cloth is space wolves grey, hair is athermatic blue, and the white in the headdress is apothecary white. I then dry brushed the hair with solid wych flesh. The metallics are normal metallics.
The iron golems I painted in basically one evening. The cypher lords took a bit more time, as I was still figuring the paint out.
I am currently painting a serephon army, when it's all conteast, and then highlights with traditional paint. Super fast, and works really well. Contrast is basically a base coat and wash in a pot. And works really well on areas with texture (skin. Hair, fur, clothing etc), and makes painting very fast. Using only contrast paints, I painted my entire Blackstone fortress set in two days.