There's a hue shift slider in the effect window. Make sure it's set at 0 and that should give you the nice red, orange and yellow colors for the effect.
If it's not hue then you may need to lower the green dimming curve for the model.
Do other effects look OK? Just making sure you don't have the order wrong (RGB, BGR, etc).If you apply simple effects, just red, blue, or green what does it look like?Sent from my Pixel using Tapatalk