Examine source code of Modern Black

{
  "name": "Modern Black",
  "author": "Jimmy Sophiaan",
  "manifest_version": 2,
  "version": "2021.6.4",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "frame": "rgb(92, 92, 96)",
      "frame_inactive": "rgb(92,92,96)",
      "tab_text": "rgb(211, 211, 216)",
      "tab_background_text": "rgb(211, 211, 216)",
      "tab_background_separator": "black",
      "tab_line": "rgb(39, 39, 43)",
      "tab_loading": "rgb(25, 140, 255)",
      "toolbar": "rgb(39, 39, 43)",
      "toolbar_text": "rgb(211, 211, 216)",
      "toolbar_top_separator": "rgb(39, 39, 43)",
      "toolbar_bottom_separator": "black",
      "toolbar_vertical_separator": "rgb(69, 69, 72)",
      "toolbar_field": "rgb(61, 61, 65)",
      "toolbar_field_focus": "rgb(61, 61, 65)",
      "toolbar_field_text": "rgb(211, 211, 216)",
      "toolbar_field_text_focus": "rgb(211, 211, 216)",
      "toolbar_field_border": "rgb(39, 39, 43)",
      "toolbar_field_border_focus": "black",
      "toolbar_field_highlight": "rgba(25, 140, 255, 0.5)",
      "toolbar_field_highlight_text": "white",
      "toolbar_field_separator": "rgb(39, 39, 43)",
      "button_background_hover": "rgb(60, 60, 62)",
      "button_background_active": "rgb(39, 39, 43)",
      "bookmark_text": "rgb(211, 211, 216)",
      "icons": "rgb(211, 211, 216)",
      "icons_attention": "rgba(211, 211, 216, 0.8)",
      "popup": "rgb(64, 64, 68)",
      "popup_text": "rgb(202, 202, 210)",
      "popup_border": "rgb(64, 64, 68)",
      "popup_highlight": "rgb(25, 140, 255)",
      "popup_highlight_text": "white",
      "ntp_background": "#28282c",
      "ntp_text": "#cacad2",
      "sidebar": "rgb(64, 64, 68)",
      "sidebar_text": "rgb(202, 202, 210)",
      "sidebar_border": "black",
      "sidebar_highlight": "rgb(46, 46, 48)",
      "sidebar_highlight_text": "white"
    }
  }
}