My N. Sanguinea is making this blackish nectar on it's peristome. It's thick, not all liquidy like the clear nectar. I touched it and it stuck to my finger, and I pulled my finger back and the nectar stretched some. The stretched part was thinner and it was more of a brown color than black, so the nectar might be really dark brown. Is this normal? Has anyone else had their plant do this? Here's a picture.