Examine source code of Moon Phases Pentagram

{
  "theme": {
    "images": {
      "theme_frame": "PentagramHead1.jpg"
    },
    "colors": {
      "frame": "#7299e8",
      "tab_background_text": "#f7efef"
    }
  },
  "version": "2.0",
  "name": "Moon Phases Pentagram",
  "manifest_version": 2,
  "description": "The moon through the phases, with a Pentagram at the full - let's get some work done!"
}