@Kilbarrack,
I'm at day 59, just now starting to see some light purple in the buds, but not too much. Mine is running a little behind, overwatered her and took about a week to fully recover and she stretched too close to my lights and got a little light stress which has stunted her some. I'm really hoping she only has about a week left now. Stem is getting some purple to it so I expect the buds to display more purple as well