They're beautiful looking plants! well done! as mentioned I wouldn't stress too much about the blue... if you can i'd get one of those propagating trays we were talking about - that way you can keep the temperature up a little and also the RH at around 80%. I received a P. violacea var. 'Blue' whose roots looked like they'd been too moist - no greeness at all just brown and sad looking! and since I've had it in the warmer temps of the propagating tray and 80RH it's shot out two new roots which you can almost watch grow!
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