Dumb taxonomists should of named it forma dunkel. Some of us like it better and it was used first!
Thank-you for the explanation.The dark colored form of Paph. delenatii was described as
Paphiopedilum delenatii forma vinicolor
The word 'dunkel' was only the german tradename for these dark colored clones and this word means only 'dark'
The plant shown by Hakone was the result of a cross between 2 different clones of Paph. delenatii forma vinicolor and you can see that the result is really a forma vinicolor.
Best greetings
Olaf