cord

Hi, I am buying cord for a ridge line onto which I'll attach a tarp with prusik knots. I believe prusiks work when they are of thinner cord than the cord they are attaching too. So I was thinking to buy 550 paracord (5mm) for the ridgeline and kombat paracord for the prusiks (3mm). Is this a...

Is this real 550 paracord? it has seven strands but the strands are not white them are green and very thin, i bought it from a place called nomads travel, also please could you tell me how to post a picture because i dont know how :(