Rather than use the test mode , I suggest that you create a sequence , put an ON red effect for 10 secs , then on green , then blue etc (only on the tree) , render all , select output to lights and test that way.
If the colors on the tree match , then good , else your lights are not RGB (they could be GRB etc) and accordingly to can change the model definition or the definition on the controller.
then you can replace the same on a whole house model and re-render. If some look odd, u probably have a channel overlap on your models..