Examine source code of Winter Blue

{
  "manifest_version": 2,
  "version": "1.2.1",
  "name": "Winter Night",
  "theme": {
    "colors": {
      "frame": "#0063b1",
      "frame_inactive": "#2b2b2b",
      "button_background_active": "#007bb6",
      "button_background_hover": "#0284c3",
      "icons": "white",
      "toolbar": "#303030",
      "toolbar_text": "rgb(255, 255, 255)",
      "toolbar_field": "#505050",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "toolbar_field_separator": "rgb(12, 30, 50)",
      "toolbar_top_separator": "rgb(12, 30, 50)",
      "toolbar_vertical_separator": "rgb(12, 30, 50)",
      "tab_background_text": "rgb(215, 226, 239)",
      "tab_line": "0a84ff",
      "tab_loading": "rgb(109, 184, 242)",
      "popup": "#2b2b2b",
      "popup_border": "#0d3562",
      "popup_text": "rgb(215, 226, 239)",
      "ntp_background": "#202020",
      "ntp_text": "white",
      "sidebar": "#191919",
      "sidebar_border": "#b2dfff",
      "sidebar_highlight": "#2a82da",
      "sidebar_highlight_text": "white",
      "sidebar_text": "white"
    }
  }
}