Examine source code of NoTree-Theme

{
  "name": "Personal Theme",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "piyAWng.jpg"
    },
    "colors": {
      "frame": "rgba(166, 93, 93, 1)",
      "tab_background_text": "rgba(131, 255, 112, 1)",
      "toolbar": "rgba(73, 96, 128, 0.58)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(255, 255, 255, 0.73)",
      "toolbar_field_text": "rgba(53, 143, 43, 0.43)",
      "tab_line": "rgba(255, 255, 255, 0.79)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0bc8ab4a-02b2-4fad-8a29-baeb7b890a25}"
    }
  }
}