I have seen stock textures, and i understood them, but I've seen only Albedo...
Look at ALL the textures, not just albedo....
Now what i can is:
For a Cybran unit lets say, do i NEED to create the other two texture maps, or it is not needed ?[/quote]
Technically no you don't really need them, but with all the stuff the specteam does for example your units would look bland and uninteresting comapred to stock or other custom units.
"yellow = (red + green) shiny and reflective, good for metal" adding red TO WHAT ?
Now your just confusing yourself. When using a Specteam you just slap on teh color for whatever effect where you want it to show up on your unit. Want your headlights to glow? Throw down some Blue, as in the color blue.
how is this map applied and where ?
I don't get this, you mean like how is it applied to the model? All 3 map types use the same set of UVs.
is it applied behind the normal map ? is it applied above the normal map ?
Your asking about something for the Spec team, why are ytou talking about the NormalTS
I suggest you go back, look at all the different textures types for a given unit and then start experimenting, especially with the Specteam.