Question

Are you able to mod Wc3 and add all the skins you did into the MPQ replacig the current ones? Like when you open up WC3 TFT isntead of snow it could be like yellow and stuff?

You can skin the tiles for the terrain, yes. And theoretically, you could skin every single model, but it would take a while!

I mean like oculd i skin a modification to make when the AT game serches green yellow blue and that stuff.