I ran across them a few years ago when deciding on what trees to plant. But even here in Houston, those beautiful trees won't survive the winter. I guess if I want them one enough I'll have to move to the Keys or Hawaii.
If you ever visit Maui, they are pretty easy to find, especially on the road to Hana. They really are just as vivid as the picture above. Of course, you'll have to differentiate them from all the other beautiful flowering plants and trees such as the African Tulip Tree.