Passifloras have never really done it for me, which surprises me as much as it probably surprises you. It's not that they're not pretty, but . . . well, I can't really give a reason. I don't know the reason. They just make me go ennh.
Until about a month ago, I didn't know that passion flowers came in any color besides purple, and up until about a year ago, I had no idea that anybody ever tried to grow them as houseplants. I still don't think very many people do, but WCW had at least one.
Of course, now that I think about it, I became aware that WCW had one at home because she brought it to the work greenhouse to overwinter, so it's possible that it didn't spend much actual time in her home (she puts everything, or at least almost everything, outside for the summer: I'm told her yard looks like a tropical rain forest that appears and disappears with the seasons), and therefore probably doesn't really count as a houseplant except very technically.