quiero cambiar mi color de fondo con la condición en BootstrapTable pero siempre regresa

mi funcion

 trStyle = (cell,row) => { if(row.createdby == "system"){ return { backgroundColor: '#b2hf3' } }else{ return { backgroundColor: '#ffffff' } }

Mi código

 <BootstrapTable data={this.state.datas} pagination={true} options={options} search={true} trStyle={ this.trStyle } > <TableHeaderColumn width='90' dataField='action' headerAlign='center' dataAlign='center' dataFormat={this.buttonFormatter}>ACTION</TableHeaderColumn> <TableHeaderColumn width='100' dataField='isActive' headerAlign='center' dataAlign='center' dataFormat={this.statusFormatter}>STATUS</TableHeaderColumn> <TableHeaderColumn width='155' isKey={true} dataField='username' headerAlign='center' dataAlign='center'>USERNAME</TableHeaderColumn> <TableHeaderColumn width='160' dataField='namaLengkap' headerAlign='center' dataAlign='center'>NAMA</TableHeaderColumn> <TableHeaderColumn width='120' dataField='roleName' headerAlign='center' dataAlign='center'>ROLE</TableHeaderColumn> <TableHeaderColumn width='150' dataField='namaWilayah' headerAlign='center' dataAlign='center'>WILAYAH</TableHeaderColumn> <TableHeaderColumn width='180' dataField='alamat' headerAlign='center' dataAlign='center'>ALAMAT</TableHeaderColumn> <TableHeaderColumn width='110' dataField='noTelepon' headerAlign='center' dataAlign='center'>TELEPON</TableHeaderColumn> <TableHeaderColumn width='180' dataField='email' headerAlign='center' dataAlign='center'>EMAIL</TableHeaderColumn> <TableHeaderColumn width='90' dataField='createdby' headerAlign='center' dataAlign='center'>CreatedBY</TableHeaderColumn> </BootstrapTable>