Examine source code of Space Galaxy

{
  "name": "Galaxy Theme",
  "manifest_version": 2,
  "version": "8.0",
  "theme": {
    "images": {
      "theme_frame": "215878.png"
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 1)",
      "tab_background_text": "rgba(0, 170, 255, 1)",
      "toolbar": "rgba(0, 0, 0, 0.53)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(166, 166, 166, 1)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(66, 57, 57, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5eae7880-dab2-4337-bc53-e4b58db7aec4}"
    }
  }
}