After using matte spray on the model to dull down the polyshade gloss finish, I decided I still wanted the blood and guts to look fresh, so I carefully went back over the bloody bits with a gloss clear varnish after.
I was very satisfied with the test model and proceeded to paint up the other 19 zombies I had with a similar technique. I wanted them all to look as different as possible though so I used a variety of colors on the clothing and tried out several different shades for flesh colors. I had a lot of fun painting this unit and it went very quick for 20 models. Painting blood and gore just never gets old I guess.