I tried to develop a red flowering hanazono kabuto and sowed seeds last year.
24 seedlings in total were grafted onto Pereskiopsis.
12: hanazono kabuto x red flowering asterias
12: red flowering asterias x hanazono kabuto
They have started to be in flower and it seems all of them are red flowering.
Only one of them has showing the character of hanazono kabuto.
I have not seen its flower yet but the bud gives the hint of color.