It is really a very good shape.
But I cannot understand what you mean with hyperchrome or vinicolor. There exist many hangianum in this colour or with more coloration. Only the rounded shape is extraordinary.
Best greetings
Olaf
I will take some more pictures. There are 3 color forms of hangianum, the normal one, another type with red color, that does not extend up to the sides of the petals, and the so-called 'vinicolor' form like the one on the picture, the red extends to the sides of the petals, and the entire back of the flower has heavy red markings as well... I will take some more pictures tomorrow of the 3 types.
There is 1 different plant in Germany too as far as I know, 'Tai-Ger'
And there are only very few hangianum with red color actually, not "many", and I have yet to see a plant with more coloration than that one or Tai-Ger. They appear as single individuals apparently.
There were at the early days some hangianum with a deep red base extending nearly to the middle of the leaves. As far as I know, none has yet flowered too.