Examine source code of vv4x2

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "vv4x",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left bottom"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(27, 40, 45)",
      "toolbar_text": "rgb(143, 143, 143)",
      "frame": "rgb(0, 7, 255)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(0, 0, 0)",
      "toolbar_field_text": "rgb(0, 255, 248)",
      "tab_line": "rgb(0, 255, 255)",
      "popup": "rgb(27, 40, 45)",
      "popup_text": "rgb(140, 140, 140)",
      "button_background_active": "rgb(117, 117, 125)",
      "frame_inactive": "rgb(56, 56, 147)",
      "icons": "rgb(14, 255, 0)",
      "ntp_text": "rgb(14, 255, 0)",
      "popup_highlight_text": "rgb(255, 21, 0)",
      "sidebar_text": "rgba(27, 24, 70, 0.24)",
      "tab_background_separator": "rgba(34, 33, 48, 0.24)",
      "tab_selected": "rgba(143, 136, 242, 0.24)",
      "tab_text": "rgb(154, 154, 230)",
      "toolbar_field_border_focus": "rgb(50, 50, 255)",
      "toolbar_field_border": "rgb(255, 2, 125)",
      "toolbar_field_focus": "rgba(0, 0, 0, 0)",
      "toolbar_field_highlight_text": "rgb(60, 60, 77)",
      "tab_loading": "rgb(0, 255, 255)"
    }
  }
}