The seed parent for this cross, code named "K155-11", is seen here and was itself a seedling of ('Marmalade Skies' X 'Baby Love') X 'Julia Child'. It is a "half-sister" seedling to 'Thrive!' since they share the same seed parent: 'Marmalade Skies' X 'Baby Love'. Like 'Thrive!', K155-11 has been extremely clean in our climate and I have seen no disease on it.
The pollen parent is a complex Hulthemia seedling that has ancestry that includes 'Persian Sunset', 'Chewtiggle', and 'Bull's Eye'. It has a nice purple blotch. It's downside is lack of vigor. It has been a smaller plant, but is building a larger plant size slowly. It's code name is "L83-6", and is a sister seedling to 'Eyeconic Pink Lemonade'. It is shown below.
Combining the above two parent roses resulted in the seedlings below. There are a handful of other seedlings from this cross that I am continuing to evaluate, but I think these two are the best. As you can see, the blotch is not very large, but I think the darker color at the base of the petals may give more of a depth to the blooms that otherwise might not be there.