Examine source code of Red at Night (Dark)

{
  "name": "Red at Night",
  "author": "Thalilawl",
  "manifest_version": 2,
  "version": "1.1",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(35, 35, 35)",
      "toolbar_text": "rgb(200, 200, 200)",
      "frame": "rgb(30, 30, 30)",
      "tab_background_text": "rgb(130, 130, 130)",
      "toolbar_field": "rgb(35, 35, 35)",
      "toolbar_field_text": "rgb(225, 225, 225)",
      "tab_line": "rgb(215, 0, 0)",
      "popup": "rgb(35, 35, 35)",
      "popup_text": "rgb(200, 200, 200)",
      "button_background_active": "rgba(215, 0, 0, 0.5)",
      "button_background_hover": "rgba(215, 0, 0, 0.25)",
      "frame_inactive": "rgb(0, 0, 0)",
      "icons_attention": "rgb(215, 0, 0)",
      "icons": "rgba(215, 0, 0, 0.85)",
      "ntp_background": "rgb(35, 35, 35)",
      "ntp_text": "rgb(225, 225, 225)",
      "popup_border": "rgb(30, 30, 30)",
      "popup_highlight_text": "rgb(225, 225, 225)",
      "popup_highlight": "rgba(215, 0, 0, 0.5)",
      "sidebar_border": "rgba(215, 0, 0, 0.25)",
      "sidebar_highlight_text": "rgb(225, 225, 225)",
      "sidebar_highlight": "rgba(215, 0, 0, 0.5)",
      "sidebar_text": "rgb(200, 200, 200)",
      "sidebar": "rgb(35, 35, 35)",
      "tab_background_separator": "rgb(35, 35, 35)",
      "tab_loading": "rgb(215, 0, 0)",
      "tab_selected": "rgba(125, 125, 125, 0.25)",
      "tab_text": "rgb(225, 225, 225)",
      "toolbar_bottom_separator": "rgba(215, 0, 0, 0.5)",
      "toolbar_field_border_focus": "rgba(215, 0, 0, 0.25)",
      "toolbar_field_border": "rgba(215, 0, 0, 0.25)",
      "toolbar_field_focus": "rgb(35, 35, 35)",
      "toolbar_field_highlight_text": "rgb(225, 225, 225)",
      "toolbar_field_highlight": "rgba(215, 0, 0, 0.5)",
      "toolbar_field_text_focus": "rgb(225, 225, 225)",
      "toolbar_top_separator": "rgb(35, 35, 35)",
      "toolbar_vertical_separator": "rgb(35, 35, 35)"
    }
  }
}