Those extra cubic feet are because the Bolt is CUV-ish and the roof is a bit higher, especially on the front seats. And that Tesla number doesn't take into account the 7-seater version, like I have.
I was playing around with the configurator and it would be nice to be able to get light color paint WITH the silver colored grille inserts. They make you get silver with black paint or dark gray with light paint. It would be nice to see that crazy orange color with the silver inserts. And yes, tint the hell out of it.