Well! I guessed you would have some ideas Oron but I think you are spot on first time. How you do it, I don't know. You alone are worth the MGS subscription fee, never mind all the other benefits
It looks like I wasn't seeing red flowers in the dark at all but red sepals. The colour is just right and the "flower" size and distribution too. I imagine the fruit is just developing on the tree I saw - or do the flowers close up at night?
Now all I have to do is get my friend to get me a return invite to another birthday party at his friend's house in a couple of week's time and I might be able to get some seeds.
Wish me luck and thanks again :-)