Really nice conversions and paint jobs. I like the ghouls with spots and the ,ulti racial zombies.
Really top drawer work!
Crits:
1. Maybe the Elf zombie should be a lot more pale, like with blue shadows in her flesh recesses instead of darker flesh. Mix the the flesh color with a little bit of blue or gray and she'll get a palid feeling. I know want the vamp feeling but I think you can get it without losing the zombie feeling. You also could give her light blue flesh with darker veins showing and cracked skin. Or you could just add a decayed patch on her tush.
2. The glowing wight faces. I think you almost got the effect you wanted. I would try again but use a lighter tint of green and one that's less minty and just ever so slightly more yellow. And I would also thin it down so that it it less defined and more translucent.
I agree with GreyKnight when he said to make the faces brighter. Make the faces a much lighter tint of the green color, and the glow effect should fade out.
The spots on the armor should be painted as normal but instead of adding white to make the highlight add the green tint.

All I did here was use photoshop to add two more layers. The first layer I painted green spots and then blurred them and the second layer I copy and passted highlights from the original and turned the brightness up.
The burring of the highlights and the color shift makes a more convincing effect.
Like I said, just paint the armor in that area like you normally would but add green to the highlight mix.