<span class="link_user">@kannafarmer</span>,
Under the microscope, I saw a trichome with a purple head, but it was impossible to get a good picture of it. This was also the only one I saw. If the temperatures had been cooler and not so summery, I believe she would have been much more purple. But if she had been left for one or two more weeks, she would have been much more colorful too. The question is, at what price?
But I think the phenotype you get plays a more decisive role.