Solar is a good name :D Bettas do scare you sometimes one time one of mine jumped out of the cup he was in while i was doing a water change. I went out to fill the bucket and came back to find him all dry on my cabinet!
Well, sometimes my betta is "encouraged" if I put a mirror up for him. Although really they just do it when they want, haha! He made the one last night after a water change. That does it too, sometimes.
Some bettas make big nests and some make smaller ones. He might just be practicing, though!
Well, bettas get a stripe down their bodies when they are stressed. You may not notice it on your betta, though, because of his light coloration. Just watch his behavior, if he's active and eating then he's probably decently happy. :)