Examine source code of Chevrolet Theme

{
  "name": "Chevrolet Theme",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "F05xnB.jpg"
    },
    "colors": {
      "frame": "rgba(219, 219, 219, 1)",
      "tab_background_text": "rgba(250, 179, 92, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8f705f6f-4cc9-4d30-877f-6cf1b84e6f3b}"
    }
  }
}