Examine source code of right pink bar

{
  "name": "right pink bar",
  "manifest_version": 2,
  "version": "10.0",
  "theme": {
    "images": {
      "theme_frame": "Firefox ヘッダー (2).png"
    },
    "colors": {
      "frame": "rgba(255, 255, 255, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(255, 255, 255, 0.5)",
      "bookmark_text": "rgba(99, 99, 99, 1)",
      "toolbar_field": "rgba(255, 255, 255, 1)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(3, 3, 3, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{aaf28836-2ac8-4e01-bdad-42f17a150fa0}"
    }
  }
}