Examine source code of Gently

{
  "description": "A Firefox Theme inspired in Gently",
  "manifest_version": 2,
  "name": "Gently",
  "version": "1.0",
  "theme": {
    "colors": {
      "frame": "#112b40",
      "frame_inactive": "#112b40",
      "tab_selected": "#050e15",
      "toolbar": "#050e15",
      "sidebar_border": "#313142",
      "popup_border": "#313142",
      "toolbar_top_separator": "#313142",
      "toolbar_field_separator": "#050e15",
      "toolbar_field_highlight": "#0571af",
      "toolbar_field_border_focus": "#0571af",
      "toolbar_field": "#050e15",
      "tab_loading": "#050e15",
      "popup_highlight": "#0571af",
      "icons": "#d7f1f8",
      "popup": "#050e15",
      "toolbar_vertical_separator": "#050e15",
      "toolbar_field_focus": "#050e15",
      "toolbar_field_border": "#313142",
      "toolbar_bottom_separator": "#313142",
      "tab_line": "#050e15",
      "button_background_hover": "#050e15",
      "sidebar_text": "#d7f1f8",
      "tab_text": "#d7f1f8",
      "sidebar_highlight_text": "#d7f1f8",
      "popup_text": "#d7f1f8",
      "toolbar_field_text": "#d7f1f8",
      "toolbar_text": "#d7f1f8",
      "toolbar_field_highlight_text": "#050e15",
      "toolbar_field_text_focus": "#d7f1f8",
      "popup_highlight_text": "#050e15",
      "ntp_text": "#d7f1f8",
      "tab_background_text": "#939393",
      "sidebar_highlight": "#050e15",
      "tab_background_separator": "#050e15",
      "sidebar": "#050e15",
      "ntp_background": "#050e15",
      "icons_attention": "#0571af"
    }
  }
}