Examine source code of Animated SF Shock

{
  "name": "Animated SF Shock",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "SFSHOCKGIFFINAL.gif"
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 1)",
      "tab_background_text": "rgba(255, 255, 255, 0.8)",
      "toolbar": "rgba(87, 89, 92, 0.85)",
      "bookmark_text": "rgba(252, 76, 2, 1)",
      "toolbar_field": "rgba(73, 75, 79, 0.9)",
      "toolbar_field_text": "rgba(252, 76, 2, 1)"
    }
  }
}