Filter_Query DataTable on array values in dropdown list


I have a DataTable that has a series of dropdowns. Is there a way to use conditional formatting that will indicate if a user copy/pastes a value into the cell that doesn’t match the values in the dropdown? I’ve tried a few things but haven’t been successful. Thanks!


                            'if': {

                                'filter_query': '{column} is blank', *(use an array instead of a single value)*

                                'column_id': 'column'


                            'backgroundColor': '#D96055'