Well, it was purple...
by the time of posting this, my hair has long since faded from purple to lavender, silvery-blue to green with pink spots...
le sigh.
I used Manic Panic Hot Hot Pink mixed with their Voodoo Blue and lots of conditioner and got enough to do two rounds of dye, which is good considering how much this has faded since application. I don't wash my hair every day or even every other day- it's only shampoo'd two or three times a week max. Even so, I'm likely going to be bleaching my roots and reapplying my homemade lavender dye again soon.
Wanna see the before and progress photos? Read below!