Examine source code of Low contrast Dark theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Dark minimal theme",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(39, 39, 41)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(26, 26, 27)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(26, 26, 27)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(39, 39, 41)",
      "popup": "rgb(39, 39, 41)",
      "popup_text": "rgb(255, 255, 255)",
      "ntp_background": "rgb(39, 39, 41)",
      "popup_border": "rgb(39, 39, 41)",
      "popup_highlight": "rgb(39, 39, 41)",
      "sidebar_border": "rgb(34, 34, 36)",
      "sidebar": "rgb(39, 39, 41)",
      "toolbar_bottom_separator": "rgb(34, 34, 36)",
      "toolbar_field_border_focus": "rgb(0, 0, 0)",
      "toolbar_field_border": "rgb(39, 39, 41)",
      "toolbar_field_highlight": "rgb(0, 0, 0)",
      "toolbar_top_separator": "rgb(26, 26, 27)",
      "tab_loading": "rgb(39, 39, 41)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{830b4b69-2e0a-4d6a-b331-e35fcfc012d9}"
    }
  }
}