He's gorgeous! I like the idea of calling him Spark, short for Spark Plug. I like the idea of you getting more fish for each name even better!!
I know the stress of having them shipped to you. I just got my first shipment a half hour ago. I ordered three bettas from Aquabid last month and they are here now, all alive and well. Acclimating them right now. Mine were a day late in arriving and the tracking info never got updated, so I was a nervous wreck about where they were. It was such a relief when they showed up!
I can't wait to see pictures of yours when he arrives!