Examine source code of VSV2

{
  "name": "VSV2",
  "manifest_version": 2,
  "version": "7.0",
  "theme": {
    "images": {
      "theme_frame": "indexFF.jpg"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(247, 247, 247, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{46aee349-d5d2-4eb7-9c05-a0d534863585}"
    }
  }
}