Examine source code of MtG - Stormscale Scion

{
  "name": "MtG - Stormscale Scion",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "MtG - Stormscale Scion.png"
    },
    "colors": {
      "frame": "rgba(130, 113, 76, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(133, 117, 77, 0)",
      "toolbar_field": "rgba(133, 117, 77, 0)",
      "toolbar_field_text": "rgba(247, 215, 118, 1)",
      "tab_line": "rgba(255, 158, 237, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{69beebbf-995c-40e1-a90e-73fac3477f3c}"
    }
  }
}