Examine source code of Hu Tao - Simple Theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Hu Tao",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(21, 7, 7, 0.5)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(11, 4, 4)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(11, 4, 4)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(214, 69, 69)",
      "popup": "rgb(11, 4, 4)",
      "popup_text": "rgb(214, 69, 69)",
      "button_background_active": "rgb(11, 4, 4)",
      "button_background_hover": "rgb(214, 69, 69)",
      "icons_attention": "rgb(214, 69, 69)",
      "icons": "rgb(214, 69, 69)",
      "popup_border": "rgb(214, 69, 69)",
      "tab_loading": "rgb(214, 69, 69)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f35d8a93-9c89-419c-bcec-45fde985ce40}"
    }
  }
}