I ran cannaventure's purpleberry bx and it was the darkest purple buds I've ever grown or seen personally. One pheno was almost black. I was going to use it for breeding but the male never produced any pollen. It had sacks, just no pollen. I decided I didn't want to cross the females because they were horrible genetics. No smell, burnt wood flavor and no high.
I've found that the only purple bud that got me really f'ing stoned was my mutant crinkle leaf pheno of dutch passions blueberry back in 2002. She had the fruity pebbles taste, super coated and turned a light purple with a few red and blue(well close to blueish purple) calyxes, we called it blue's clues. I tried a couple packs since then but they, like many others whom bred the blueberry, have mostly bred the twisted leaf mutation out of the strain so no more blue's clues pheno to be found. I would like to go back and whoop my younger self's ass for not holding that blue's clue pheno throughout the years.