Yeah the green makes it look like hop sediment to me. In my experience, hop sediment doesn't compact as well and tends to get into the beer glass. It's not the end of the world, be careful when you're pouring.
I'm to the point where I tie a muslin bag to the end of my racking hose (the end that goes into the keg/bottling bucket) when racking a dry hopped beer. I don't trust the draw string so I use actual thread to get it nice and snug. This keeps the hops out of the finished product and is pretty easy to clean. Make sure to sanitize this setup with the bag and thread and everything.