Examine source code of Diamond Snow

{
  "name": "Diamond Snow",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "Untitled design.gif"
    },
    "colors": {
      "frame": "rgba(247, 249, 252, 0)",
      "tab_background_text": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d0a144ef-a4f2-4999-8270-ed47f16f3c2d}"
    }
  }
}