User Eris Rose 0 on substance share pointed out on my last upload the dirt looked more like moss. Which gave me the idea to edited it a bit too make the normal pop a little more. As always let me know if you have any suggestions or ideas.
It has adjustable colors and amount of moss. Made for use in UE4 so it uses metal roughness.
You can download and use this substance (.sbsar and .sbs) for free from the link below (as soon as allegorithmic approves it)