Here's my finished Chaos Lord for my Khorne Daemonkin army. I tried to capture the 'essence' of him being slowly possessed in his worship; hence the wings and the bloodletter arm. I'm sure it's a painfully murderous process!
I did a test paint on the juggernaut with all bronze and didn't like it. Too flashy. At the same time I wanted him to stand out from the rest of the bloodcrushers I'd painted so all I did was add some extra gold/bronze to the head plate and some shim guards which I think is enough to set him apart. The bronze was done with tin bits followed by successive dry brushes of dwarf bronze, shining gold, burnished gold and mithril followed by a gryphonne wash and then oxide.
This juggernaut was a skullcrusher (had a saddle) but I hadn't originally planned to use it as such so the saddle was carved off. Because of this I had to convert his crotch from a space marine and then I added the kilt piece from a daemon prince to his waist on the back to cover up the mix match of parts.
I really like the huge axe which will have to be an axe of khorne. It looks bigger since I cut off the second hand that it came with and now it just looks like a massive one handed axe great for harvesting skulls.
Juggernauts are awesome. He's even rhino'd a few unsuspecting victims and bloodied his crest.
You can see here that I used the chest from a space marine which might look a little small on the skullcrusher legs. It was quite obvious originally but after adding the wings and blood letter arm (which was honestly a conversion of necessity to hide that fact) it blended a lot more. I'm happy I was forced into that.