Strange Blackberry Kush

All normal except that unlike every other Blackberry I've grown, this one is bright yellow. I know it's nothing to do with the nutrient so all that's left is some sort of genetic mutation. I've never heard of a Blackberry with yellow leaves phenotype. So depending on how the next week goes I may end up terminating this one. Or maybe she'll do something spectacular later, or maybe she might even go green and become normal, which will leave the mystery in place.