L.G. I'm figuring the red color may be rather quite different, between 'Taiyo', & the sport from it, you have... Because of that, it isn't quite so obviously apparent, as such.
It would be nice if the 'Shima-nishiki' in the solid red were isolated, if it hasn't been accomplished, & named already.
I'm not even sure where 'Shiunden', I bought from White Flower Farm, originally came from, as I sure don't ever recall seeing that cv. name before.
No idea, if there's any possible way, to cause a tendency towards more white streaks (Decolorized areas ?) Because, I'm
fairly certain, it's more of a genetic trait (seemingly, unstable.)
Though I really do like that solid red, of Shima-nishiki !
(I sure hope I haven't managed to confuse cv. name, as to origin of the sport, due to poor memory, & started to wonder...)