This tree has flowers that are multi colored and also flowers that are single colors. It is a specific cultivar that does this, I can't remember what I was told it is. I don't think it's a very common one. It has differentiated colors on each branch, so not a grafted thing.
Well to be open about this, someone made me an offer on the tree and I countered that offer with $725. I think it's only fair to offer this price to any other interested folks here on this forum before I move it to auction land.