2 more questions: Adding the material input would apply material to entire mesh. How do i apply a material only to a certain part of the mesh, for example, just the roads?
Also, there is an orange color hue to the entire mesh when selected, but even when not selected, the orange color hue still persist. Sometimes it disappears and the buildings would look normal again. But most of the time the orange hue stays, i cannot figure out how to turn it on/off.