Examine source code of SUNSHINE

{
  "name": "1000080649",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "1000080649.jpg"
    },
    "colors": {
      "frame": "rgba(22, 23, 26, 1)",
      "tab_background_text": "rgba(48, 171, 169, 1)",
      "toolbar": "rgba(0, 0, 0, 0.47)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{74f1cbd7-3d6c-48dd-acec-c264e7b46403}"
    }
  }
}