I spotted this shrub-like plant in California, USA.
Almost definitely not a CA native.
It looks like a coleus to me -- cultivars are pretty diverse but typically have variegated leaves with some amount of purple coloration.
It is Bouganvillia. If you have pets you don't want one even if your neighbors have pets. When the flowers drop they get all over the place and if they get into any food or water source for pets they will slowly die from the Poisonous oils that seep out of the flower. Other than that they are a very easy vine to grow and easy to train.