Examine source code of Edge Dark Eren

{
  "name": "Edge Dark",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "ffox.png"
    },
    "colors": {
      "frame": "rgba(38, 38, 38, 1)",
      "tab_background_text": "rgba(64, 64, 64, 1)",
      "toolbar": "rgba(51, 51, 51, 1)",
      "bookmark_text": "rgba(184, 184, 184, 1)",
      "toolbar_field": "rgba(64, 64, 64, 1)",
      "toolbar_field_text": "rgba(184, 184, 184, 1)",
      "tab_line": "rgba(51, 51, 51, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3069b3d4-57c8-4979-986a-5e828b389c61}"
    }
  }
}