I love it too bro. Have you experienced this before with autos? is it a LED thing? I ve read low temp during lights off could do this, and the leaves stokes are proper red too..I think each single one I grew had this Pink Purpleish hue to it...
Ive not had colour in an X myself but I've see a few even a jet black one grown outdoor,I would definatly say low temps bro it can bring out some real beauty.