Atrey said me that he wanna implement in efreeze mod the cpma models. Cpma models are better than actual model (which are completly unicolor, not detailled and fully ugly).
But I will do a suggestion. Why not using OSP models ? They are more customisable than CPMA models (and more pleasant). Here follow an example.
Try it : active OSP mod. Select a new model, like this one :

After that you will see enemy like this (with forceModels of course)

At this point, you can set 4 different colors for each part of enemy bodies : head, body, arms and legs with "/cg_enemyColor xxxx"

And you will see models with the 4 chosen colors :

Yes, I know, bad example, my model has no interest, but I've set random values.

