Examine source code of Pennywise (IT Animated)

{
  "name": "IT (Penntwise Animated)",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "oie_sqIwSrFYGkDR.gif"
    },
    "colors": {
      "frame": "rgba(255, 255, 255, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(0, 0, 0, 0.4)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(255, 255, 255, 0.29)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(255, 255, 255, 0.07)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{659e5e3e-4f21-440d-936f-7e97425a19ec}"
    }
  }
}