Examine source code of TMNT

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Ninja Turtles",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(225, 234, 239, 0)",
      "toolbar_text": "rgb(4, 255, 12)",
      "frame": "rgb(4, 255, 12)",
      "tab_background_text": "rgb(4, 255, 12)",
      "toolbar_field": "rgba(2, 20, 219, 0.6)",
      "toolbar_field_text": "rgb(4, 255, 12)",
      "tab_line": "rgb(248, 112, 140)",
      "popup": "rgb(5, 16, 140)",
      "popup_text": "rgb(4, 255, 12)",
      "button_background_hover": "rgb(34, 25, 77)",
      "icons_attention": "rgb(4, 255, 12)",
      "ntp_background": "rgb(34, 25, 77)",
      "tab_selected": "rgba(2, 20, 219, 0.6)",
      "tab_text": "rgb(4, 255, 12)",
      "toolbar_field_border": "rgba(141, 234, 165, 0)",
      "toolbar_field_highlight_text": "rgba(141, 234, 165, 0)",
      "toolbar_field_separator": "rgba(141, 234, 165, 0)",
      "toolbar_field_text_focus": "rgb(255, 205, 0)",
      "toolbar_top_separator": "rgba(141, 234, 165, 0)",
      "tab_loading": "rgb(248, 112, 140)"
    }
  }
}