Examine source code of heart explosion

{
  "theme": {
    "images": {
      "theme_frame": "ist2_5357958-wavy-waves-retro-vector-dots-21.jpg"
    },
    "colors": {
      "frame": "#030000",
      "tab_background_text": "#030000"
    }
  },
  "version": "2.0",
  "name": "heart explosion",
  "manifest_version": 2
}