Rido,
I walked through the seedling beds here and things from the 'Jungle Shadows' line showed the best color at this time of year. Actually I was pleased at how well 'Jungle Shadows' itself looked considering I named that in 1969! Way back when it was the ONLY one that kept its color year round. It was a breakthrough back then and I'm glad to see that despite many generations of its progeny are also exhibiting that trait. 'Killer' is another that is good but it is variable in its coloration. I find that interesting but some would rather they didn't change. Of course I've combined the two in things like 'Borsht' and 'Patent Leather Shoes'. If you can find 'Forever Midnight' it is giving the most persistently colored material. I have a spidery one in jet black that is really pretty.
Will try to harvest seed of some of these for you to try. It will be open pollinated but still should have a lot of progeny from selfing. I did harvest some seed off several dark heuffs and 'Lion King' for you yesterday and is shedding in bags now.
Kevin