Examine source code of workspace.gif

{
  "name": "workspace.gif",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "ezgif.com-gif-maker(1).gif"
    },
    "colors": {
      "frame": "rgba(255, 255, 255, 1)",
      "tab_background_text": "rgba(65, 74, 105, 1)",
      "toolbar": "rgba(17, 0, 255, 0)",
      "bookmark_text": "rgba(42, 59, 82, 1)",
      "toolbar_field": "rgba(31, 54, 71, 1)",
      "toolbar_field_text": "rgba(0, 208, 255, 1)",
      "tab_line": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{16c446ad-495d-45b9-a424-7c4889f23cc9}"
    }
  }
}