Examine source code of Dancing Pixel Miku

{
  "name": "Dancing Pixel Miku",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "1988189_c8397.gif"
    },
    "colors": {
      "frame": "rgba(69, 69, 69, 1)",
      "tab_background_text": "rgba(0, 199, 179, 1)",
      "toolbar": "rgba(0, 0, 0, 0.2)",
      "bookmark_text": "rgba(0, 199, 179, 1)",
      "toolbar_field_text": "rgba(87, 87, 87, 1)",
      "tab_line": "rgba(0, 199, 179, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a11932a3-a18d-4cfd-98aa-83f79eecb5ab}"
    }
  }
}