All you need to do is fill a 5 gallon bucket with hickory chunks, fill the bucket with water and let sit for a week or so. The water will turn blood red and it does dye clothes.
I came on this by sure accident, I have a real BBQ and like to smoke meat over hickory. I cut a bunch of hickory chunks to filled a 5 gallon bucket for the smoker. Smoking works best if wood is wet, so I filled the bucket with water and put a lid on it. The next week when I went to fire up the smoker, I opened the bucket to grab some hickory chips and there it was blood red water, I got a couple of spots on my shirt and it did not wash out.