Examine source code of bcrkva20

{
  "name": "bcrkva20",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Untitled.jpg"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(12, 24, 240, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{442109c7-a55e-4e09-8573-aa60195aa8ee}"
    }
  }
}