Examine source code of Falling Like Rain

{
  "name": "Falling Like Rain",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "Falling Like Rain long.jpg"
    },
    "colors": {
      "frame": "rgba(65, 80, 112, 1)",
      "tab_background_text": "rgba(220, 229, 245, 1)"
    }
  }
}