Sorry for the crappy pic. But I have never seen this before.
I’m getting purple leaves on this young lady that I don’t believe to be common with the strain.
It’s Malawi feminized from Ace. I have 3 of them going from seed and this is the only one showing purple coloration on the new growth. Pretty sure it’s not environmental or a problem with the medium. So being optimistic I’m hoping she’s something extra special.