Examine source code of New Moon Characters

{
  "name": "New Moon Characters",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "NewMoonCharacters-Header.jpg"
    },
    "colors": {
      "toolbar": "rgba(0, 0, 0, 0)",
      "toolbar_field": "rgba(255, 255, 255, 0)",
      "frame": "#5e4a4e",
      "tab_background_text": "#181112"
    }
  }
}