Thanks for your kind words, guys.
I use Dwarf Bronze (old GW range) for the coppery armour, but it's not going to last forever. I have to decide whether to try the new high pigment GW copper / bronze, Hashut Copper, or try the Game Colour Vallejo option eventually.
I used to use a diluted Hawk Turquoise as a "verdigris" wash, but I got lazy and have the new GW "Nihilakh Oxide" which is probably a bit too bright but not bad.
After finishing the horsemen I completely collapsed and felt swamped with other stuff, uninspired. I cleared my desk and told myself to do a single test strip as a template, same as I did with the horsemen.
This is the result.