Habit suggests Sophora secundiflora, however without a closeup that's
only a guess.

and defying gravity ...

take the closeup.. with your phone upwards ... see if it comes out right

ken

Ok, thanks, Saltcedar and ken... I will try to get a close up next time I go to that store. Ken, I didn't get what you meant by defying gravity :)

Click on the picture it turns upright.

It doesn't turn upright for me when I click on it, still upside down.

Green, absolutely not a crape myrtle, as you guessed. There are all kinds of possibilities, including shrubs that have been limbed up to create a tree form. I first thought of wax myrtle when I saw this, for example. Chinese privet is also mushroom pruned for this effect. Pittosporum and some hollies can be pruned this way, but these plants are not likely to be either of those.