Examine source code of OldSoulDesignCo.

{
  "name": "OldSoulDesignCo.",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "OldSoul_ThemeHeader2.jpg"
    },
    "colors": {
      "frame": "rgba(41, 41, 54, 1)",
      "tab_background_text": "rgba(0, 166, 202, 1)",
      "toolbar": "rgba(255, 247, 237, 1)",
      "toolbar_field": "rgba(0, 166, 202, 1)",
      "toolbar_field_text": "rgba(255, 247, 237, 1)",
      "tab_line": "rgba(255, 247, 237, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{87582fc2-3bf3-4e4e-b3b5-9b5375061c47}"
    }
  }
}