Fred , your Emerald Starburst seedling does look unique. I had two seedlings out of Emerald Starburst x Dream Catcher. One seedling had a little wimpy scape with one or two buds. The other seedling I kept and it may be registered in a few years.
Only problem with Emerald Starburst and Rose F are they are slow increasers here and the bud count is in the low teens. I had better bud count on Emerald Starburst from rebloom.