Examine source code of life10

{
  "name": "life10",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "life10.JPG"
    },
    "colors": {
      "frame": "rgba(60, 79, 125, 1)",
      "tab_background_text": "rgba(133, 66, 66, 1)",
      "toolbar": "rgba(0, 0, 0, 1)",
      "bookmark_text": "rgba(171, 207, 131, 1)",
      "toolbar_field": "rgba(209, 144, 203, 1)",
      "toolbar_field_text": "rgba(122, 116, 194, 1)",
      "tab_line": "rgba(214, 94, 106, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8ed5ab66-ea5a-4927-9419-ab6b5b10e8e6}"
    }
  }
}