Thanks for the explanations and help here! I didn’t realize there was an extra component for the Dark/Light. I can figure out a way to make the module numbers more clear, perhaps adding an image to replace the text default. Your suggestion of 01 is good too.
For the search banner:
Before, I was able to see at least 2x more of this image. When I started the day (even before adjusting the theme) the image was reduced in size, so it seems it was an update that caused it? Even if I upload a file per your suggested dimensions in another post above (1920x1080) it still does this stretching thing.