Examine source code of Scattered Red Hearts

{
  "theme": {
    "images": {
      "theme_frame": "redhearts.jpg"
    },
    "colors": {
      "frame": "#0015ff",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Scattered Red Hearts",
  "manifest_version": 2,
  "description": "Lovely red hearts scattered around the skin. "
}