Examine source code of Stay for a Spell

{
  "name": "Stay for a Spell",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Stay for a Spell.png"
    },
    "colors": {
      "frame": "rgba(1, 32, 47, 1)",
      "tab_background_text": "rgba(136, 204, 247, 1)",
      "toolbar": "rgba(1, 32, 48, 0)",
      "toolbar_field": "rgba(1, 32, 48, 0)",
      "toolbar_field_text": "rgba(211, 109, 237, 1)",
      "tab_line": "rgba(242, 143, 14, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2cf09f08-c4d4-443a-a78c-f16a424c7125}"
    }
  }
}