Examine source code of Black Google Theme

{
  "name": "Black Google Theme",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "google-icon.png"
    },
    "colors": {
      "frame": "rgba(16, 22, 36, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f24a5e3c-4f6a-49be-9d3d-72e0a49db7c8}"
    }
  }
}