As my understanding goes there are 3 ways to color a model:
-Download another software for that
-Download photoshop/gimp/paint and color the unwrapped version of your model
-Use the blender brushes
but I don't know what are the other softwares to download, I don't know how to color something that was unwrapped... any link for tutorials out ther? cause I can't find any.
I tried the blender brushes and they are very limited.