Examine source code of Abstract Impact

{
  "name": "Abstract Impact",
  "manifest_version": 2,
  "version": "5.0",
  "theme": {
    "images": {
      "theme_frame": "abstrakt59.png"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(235, 235, 235, 1)",
      "toolbar": "rgba(112, 67, 0, 0)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(0, 0, 0, 0.56)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(184, 184, 184, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{69a0f81f-dde0-4d2f-a48b-6eac39d9aeca}"
    }
  }
}