I used a variety of craft paints and a couple metallics from Golden. I mixed some white in the silver, dry-brushed and then lightly dry-brushed again with silver. You can see the results in the who's painting what thread. Good enough for my purposes.
I have done 16 Parthian cataphracts and while they look quite good, they are also rather dark overall. Any ideas on how to lighten up silver/gold.bronze paint without making it matte?
What type of primer did you use? White or black? A common problem with black primer (I think) is that the overall effect, not surprisingly, can be sometimes be rather dark. I'm generally a white-primer guy, but for my III/15 Tibetans (also Khurasan), I thought I'd try the black primer method. --All those klankers, right?
As others have already suggested, I drybrushed with a metallic silver to show off the chainmail. I first applied white paint to the horses' tails and other bit fabric, etc., before painting them their intended colors. Tedious, for sure, but I was pleased the final effect (below).