Examine source code of LogicLab

{
  "name": "LogicLab",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "ytiieusXgM2K8bLkEDP-AS1ePds.png"
    },
    "colors": {
      "frame": "rgba(17, 211, 245, 1)",
      "tab_background_text": "rgba(57, 23, 207, 1)",
      "toolbar": "rgba(143, 31, 31, 1)",
      "bookmark_text": "rgba(19, 22, 158, 1)",
      "toolbar_field": "rgba(10, 143, 61, 1)",
      "toolbar_field_text": "rgba(32, 35, 191, 1)",
      "tab_line": "rgba(232, 42, 127, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4e1b64c2-c385-464c-83a7-ca8d781c2958}"
    }
  }
}