Hi Dana,
I would recommend 'Night Wings' but its nothing you are looking for, as in re-blooming, short scape etc... that said it is beautiful IMHO. It and 'American Revolution are my two darkest CVs. AR is re-blooming on a 28" scape but I've never grown it in shade. NW is currently growing in the shade and seems to be happy in its location.
Last year shot of AR,
Current season shot of NW
This photo doesn't do NW justice so here is one from last year,
