RidgeCreekFarm
Chirping
I’m no expert, but given the color, I would highly suspect the Red Cabbage- you can use it to make a similar color dye, depending on the PH!
http://khkeeler.blogspot.com/2014/06/dye-plant-colors-of-red-cabbage.html?m=1
http://khkeeler.blogspot.com/2014/06/dye-plant-colors-of-red-cabbage.html?m=1