Examine source code of ME

{
  "name": "ME",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "KKKKKKKKK.png"
    },
    "colors": {
      "frame": "rgba(166, 169, 176, 0.5)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(158, 158, 158, 0)",
      "bookmark_text": "rgba(138, 138, 138, 1)",
      "toolbar_field": "rgba(0, 0, 0, 0)",
      "toolbar_field_text": "rgba(17, 55, 191, 1)",
      "tab_line": "rgba(189, 73, 73, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6c2b888e-9292-4e07-aac2-f57cb72b8b1e}"
    }
  }
}