Examine source code of Dark hack

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Dark hack",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(0, 0, 0)",
      "toolbar_text": "rgb(142, 251, 3)",
      "frame": "rgb(0, 5, 5)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(0, 0, 0)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(142, 251, 3)",
      "popup": "rgb(0, 0, 0)",
      "popup_text": "rgb(142, 251, 3)",
      "button_background_active": "rgb(0, 5, 5)",
      "button_background_hover": "rgba(165, 249, 247, 0.46)",
      "frame_inactive": "rgba(250, 90, 90, 0.63)",
      "icons": "rgb(47, 135, 241)",
      "ntp_background": "rgb(0, 5, 5)",
      "ntp_text": "rgb(142, 251, 3)",
      "popup_border": "rgb(142, 251, 3)",
      "popup_highlight_text": "rgba(165, 249, 247, 0.46)",
      "popup_highlight": "rgba(165, 249, 247, 0.46)",
      "sidebar_border": "rgb(142, 251, 3)",
      "sidebar_highlight_text": "rgba(165, 249, 247, 0.46)",
      "sidebar_highlight": "rgba(165, 249, 247, 0.46)",
      "sidebar_text": "rgb(142, 251, 3)",
      "sidebar": "rgb(142, 251, 3)",
      "tab_background_separator": "rgb(255, 255, 255)",
      "tab_loading": "rgb(245, 208, 4)",
      "tab_selected": "rgb(39, 40, 40)",
      "tab_text": "rgb(142, 251, 3)",
      "toolbar_bottom_separator": "rgb(47, 135, 241)",
      "toolbar_field_border_focus": "rgb(245, 208, 4)",
      "toolbar_field_border": "rgb(77, 79, 79)",
      "toolbar_field_focus": "rgb(0, 5, 5)",
      "toolbar_field_highlight_text": "rgb(142, 251, 3)",
      "toolbar_field_highlight": "rgba(165, 249, 247, 0.46)",
      "toolbar_field_separator": "rgba(165, 249, 247, 0.46)",
      "toolbar_field_text_focus": "rgb(255, 255, 255)",
      "toolbar_top_separator": "rgb(0, 5, 5)"
    }
  }
}