default.go
func (r *RGBColor) UnmarshalText(data []byte) error { // validation is performed later on
	*r = RGBColor(string(data))
	return nil
}
func (r *RGBColor) UnmarshalText(data []byte) error { // validation is performed later on
	*r = RGBColor(string(data))
	return nil
}
// UnmarshalText hydrates this instance from text