Examine source code of Red LEGO Block

{
  "name": "Red LEGO Block",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "lego.gif"
    },
    "colors": {
      "frame": "rgba(237, 95, 111, 1)",
      "tab_background_text": "rgba(117, 6, 6, 1)",
      "toolbar": "rgba(255, 74, 74, 1)",
      "bookmark_text": "rgba(161, 23, 23, 1)",
      "toolbar_field": "rgba(255, 125, 125, 1)",
      "toolbar_field_text": "rgba(214, 77, 77, 1)"
    }
  }
}