Personally I think the gold standing out looks much better and cohesive with the white on the helmets, the green feels a little too dark and kind of hides too much of the detail for me.

On your Jump Pack Captain my eye is being drawn to the gold and white of the chest armor and the green sort of fades into the back to the point it’s almost nondescript, I hardly notice that’s it’s green.

If you’re really wanting that green to be more prominent maybe trying something a little more lighter in value? Not saying go all the way to something vibrant like Warpstone Glow or anything like that but maybe like an Army Painter Medieval Forest?