Examine source code of Summer Nights

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Summer Nights",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(255, 142, 17, 0)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(0, 231, 255)",
      "tab_background_text": "rgb(175, 193, 206)",
      "toolbar_field": "rgba(9, 71, 252, 0)",
      "toolbar_field_text": "rgb(217, 234, 241)",
      "tab_line": "rgb(112, 206, 248)",
      "popup": "rgba(13, 20, 23, 0.76)",
      "popup_text": "rgb(226, 246, 255)",
      "button_background_active": "rgba(255, 255, 255, 0.64)",
      "button_background_hover": "rgba(81, 51, 0, 0)",
      "frame_inactive": "rgba(128, 132, 165, 0.64)",
      "icons_attention": "rgb(255, 255, 255)",
      "icons": "rgba(219, 237, 255, 0.64)",
      "ntp_background": "rgba(0, 0, 0, 0)",
      "ntp_text": "rgb(212, 233, 247)",
      "popup_border": "rgba(0, 0, 0, 0)",
      "popup_highlight_text": "rgb(255, 255, 255)",
      "popup_highlight": "rgba(255, 255, 255, 0.52)",
      "sidebar_border": "rgba(0, 0, 0, 0)",
      "tab_background_separator": "rgba(212, 190, 255, 0.16)",
      "tab_loading": "rgb(238, 221, 188)",
      "tab_selected": "rgba(0, 0, 0, 0)",
      "tab_text": "rgb(255, 255, 255)",
      "toolbar_bottom_separator": "rgba(0, 0, 0, 0)",
      "toolbar_field_border_focus": "rgba(0, 0, 0, 0.76)",
      "toolbar_field_border": "rgba(0, 0, 0, 0)",
      "toolbar_field_focus": "rgba(4, 17, 34, 0.76)",
      "toolbar_field_highlight_text": "rgb(0, 72, 255)",
      "toolbar_field_highlight": "rgb(255, 255, 255)",
      "toolbar_field_separator": "rgba(0, 0, 0, 0)",
      "toolbar_field_text_focus": "rgb(255, 255, 255)",
      "toolbar_top_separator": "rgba(0, 0, 0, 0)",
      "toolbar_vertical_separator": "rgba(0, 0, 0, 0.76)"
    }
  }
}