Examine source code of Light in the Forest

{
  "name": "Light in the Forest",
  "manifest_version": 2,
  "version": "5.0",
  "theme": {
    "images": {
      "theme_frame": "LightintheForesH.jpg"
    },
    "colors": {
      "frame": "rgba(41, 51, 28, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(40, 51, 28, 0)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(88, 107, 65, 0.1)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{da79d3dd-17d2-443a-880e-474902b9ac94}"
    }
  }
}