code: function defaultTheme(theme) {
    if (theme == null) return Form.defaultProps.theme
    if (typeof theme !== 'object') {
      throw new Error('Invalid Frig theme. Expected an object')
    }
    Form.defaultProps.theme = theme
    UnboundInput.defaultProps.theme = theme
    return true
  }
docs: Setter and getter for the Frig default theme