Green Roof Stains
 

What are the light green stains on my roof? Are they a green mold or run off of pine pollen or both. Mostly in shady areas so I suspect mold. I know black streaks are common, which is blue green algae, but not sure about green. Anyone else have this issue? I was thinking of using Wet & Forget, Spray & Forget or Roof be Clean. Any experience with these products?