As a reminder, the game comes out with one mod already in place.
It does what the name says:

The purpose of the mod is to provide one for those maybe asking about such an option, so that they can then return to playing with color coded NATO icons again [8D]
[*] Fire up your JSGME, activate, and you're on.
Not familiar with JSGME? For a brief instruction on how to activate the mod, have a look at the JSGME mod enabler how-to guide HERE
Enjoy!