Hi Valarie!
I´m busy cleaning the seeds I collected from my T. azureum and checking the pictures posted in the PDB I realize you succeeded growing T. tricolor and T. brachyceras. Do you want to give the T. azureum a try? I also collected T. brachyceras with some bronce coloured blooms among them.
You would have to wait until January for me to mail them, since I will be very busy these days.
Greetings from Chile,
Ursula