Examine source code of Moon and Ocean

{
  "theme": {
    "images": {
      "theme_frame": "moontop.jpeg"
    },
    "colors": {
      "frame": "#5e9eff",
      "tab_background_text": "#a3b7c4"
    }
  },
  "version": "2.0",
  "name": "Moon and Ocean",
  "manifest_version": 2,
  "description": "A moon and Ocean thing I put together at random. none of the images are mine."
}