Examine source code of Blue Algiz

{
  "name": "Blue Algiz",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Algitzblau.jpg"
    },
    "colors": {
      "frame": "rgba(232, 238, 250, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar_field_text": "rgba(250, 245, 245, 1)",
      "tab_line": "rgba(250, 242, 242, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{164b16a1-1ad5-408e-827e-286292454850}"
    }
  }
}