Examine source code of devuanpup light

{
  "name": "devuanpup light",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "5.png"
    },
    "colors": {
      "frame": "rgb(249, 249, 251)",
      "tab_background_text": "rgb(0, 0, 0)",
      "toolbar": "rgb(249, 249, 251)",
      "bookmark_text": "rgb(76, 85, 93)",
      "toolbar_field": "rgb(76, 85, 93)",
      "toolbar_field_text": "rgb(239, 241, 247)",
      "tab_line": "rgb(76, 85, 93)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2124a7b0-b843-415e-89f4-e5f251226bfd}"
    }
  }
}