Examine source code of Gruvbox Dark Hard

{
  "manifest_version": 2,
  "version": "1.1.0_1",
  "name": "Gruvbox Dark Hard",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "frame": "#1d2021",
      "toolbar": "#32302f",
      "toolbar_text": "#ebdbb2",
      "toolbar_field": "#1d2021",
      "toolbar_field_text": "#ebdbb2",
      "toolbar_top_separator": "#32302f",
      "toolbar_bottom_separator": "#32302f",
      "tab_background_text": "#a89984",
      "tab_line": "#689d6a",
      "tab_loading": "#689d6a",
      "popup": "#1d2021",
      "popup_text": "#ebdbb2",
      "ntp_background": "#1d2021",
      "ntp_text": "#ebdbb2",
      "sidebar": "#1d2021",
      "sidebar_border": "#32302f",
      "sidebar_text": "#ebdbb2"
    }
  }
}