Prostores add a product wizard allows adding more than 20 characters for color but the add product interface doesn't
The discrepancy you are having is an issue with the Add Product wizard. ProStores has always been limited to 20 characters per attribute. A future version of ProStores is scheduled to correct the issue with the wizard and a feature request has been made to expand the product attribute field. However until the functionality has been added you will want to limit product attributes to 20 characters
