We've had A LOT of Heucheras come and go in the last ten years here so I'll weigh in with a couple of my favorites.
'Paris' is at the top of my list - one because it's a prolific bloomer and two because the blooms last for months!
Although not one of the colors you're looking for I adore the flowers of 'Ginger Ale' - the lemon yellow color is so unique!
'Cinnabar Silver' is another favorite and also a prolific bloomer - a unique 'cinnamon red', if that's even a color?
