That's good to hear about Owen's Purple and Royal Purple! My Royal Purple had a good head start on Owen's and it's looking really good in it's plastic cup! Not dark tomato related but Pink Passion dwarf is a very good looking plant (to me)...
So far my best looking most vigorous small plants are IS PL and IS RL along with Pruden's Purple, the Indian Zebra's are ok but they aren't as vigorous so far.
I've got a " " Purple series going on this year with Pruden's Purple, Royal Purple and Owen's Purple.
Al