Examine source code of dark_mo

{
  "name": "dark_mo",
  "manifest_version": 2,
  "version": "5.0",
  "theme": {
    "images": {
      "theme_frame": "Untitled-1.jpg"
    },
    "colors": {
      "toolbar": "rgba(38, 38, 38, 1)",
      "toolbar_field": "rgba(71, 71, 71, 1)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "frame": "rgba(41, 41, 41, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "bookmark_text": "rgba(199, 199, 199, 1)"
    }
  }
}