Examine source code of Librefox Dark Theme

{
  "manifest_version": 2,
  "applications": {
    "gecko": {
      "id": "librefox-dark-theme@intika.be",
      "strict_min_version": "58.0"
    }
  },
  "name": "Librefox Dark Theme",
  "version": "2.2resigned1",
  "description": "Librefox Dark Theme For Firefox",
  "icons": {
    "48": "icon.svg",
    "96": "icon.svg"
  },
  "theme": {
    "colors": {
      "accentcolor": "#31363b",
      "textcolor": "#eff0f1",
      "toolbar": "#4f5358",
      "toolbar_field_text": "#e2e3e4",
      "toolbar_field": "#232629",
      "popup": "#232629",
      "popup_text": "#eff0f1",
      "popup_border": "#616569",
      "icons": "rgb(249, 249, 250, 0.7)",
      "tab_line": "#0a84ff",
      "toolbar_field_separator": "#5F6670",
      "toolbar_bottom_separator": "hsl(240, 5%, 5%)",
      "toolbar_field_border": "rgba(249, 249, 250, 0.2)",
      "sidebar": "#38383D",
      "sidebar_text": "rgb(249, 249, 250)",
      "ntp_background": "#2A2A2E",
      "ntp_text": "rgb(249, 249, 250)"
    }
  }
}