Stylized environment assets environments like Radiant in Dota2 ** Static Meshes in Additional files section has collisions ** Textures are from 512 to 2k and there are only base color and normal map no ORM texture. ** sketchfab viewport does not allow color overlay on top of texture but for dire side you can make trees draker in any software or engine you use, for the sake of performance and keeping everything lighter, there is no separate texture for them.