That upper bout is also painted over with a blueish paint. It covers the top and wraps around the back just a little. If you ever see pics of the back, you can see the lighter sonic blue next to that color.
Thanks for the input. For anyone else interested in this, I found these two videos on YouTube. Two different ways to conceptualize the process. The second guy likes to switch to the neck when the solo starts hitting the upper frets. One of them also gave the suggestion of flicking to the bridge...
I’m not sure if this is the same article, but that link didn’t work so I looked it up.