Finding Bouganvillea seeds turned out to be a challenge, but I finally managed to purchase some seeds for a plant with garnet colored flowers.
Some seeds were placed on moist paper towels to germinate and some were placed in vitro. I finally gave up on the seeds in paper towels after a few weeks. The seeds in vitro began swelling and produced radicles within about two weeks. Then, they seemed to grind to a halt.
Knowing that the seeds "need to see light" to germinate, I decided to give one vessel light 24/7 for several days to see what the effect would be.
The above video is a record of the experiment and this seed is far ahead of seeds started on the same day.