Highlighting Dropdownlist row depending on data from datasource

I have a SQL datasource on a page which populates a dropdown menu.

 

               <asp:SqlDataSource ID="DSUnitAvailable0" runat="server" ConnectionString="<%$ ConnectionStrings:IRISConnectionString %>" SelectCommand="GET_AVAILABLE_QUALSCHEME_UNITS_IVRECORD" SelectCommandType="StoredProcedure">
                        <SelectParameters>
                            <asp:SessionParameter Name="IVRECORDID"  SessionField="IVRECORDID" />
</SelectParameters>
                    </asp:SqlDataSource>

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<asp:DropDownList ID="ddlUNIT02ID1" runat="server" AppendDataBoundItems="True" CssClass="selectpickedr" data-live-search="true" DataSourceID="DSUnitAvailable0" DataTextField="QUALSCHEMEUNIT" DataValueField="QUALSCHEMEUNITID">
                 <asp:ListItem Selected="True" Value="0">-</asp:ListItem>
                    </asp:DropDownList>

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I also have another field being returned by the datasource which is called ' Highlight' . This can either be 1 or 0.  

What I'd like to do is highlight the row on the dropdown menu if 'the field 'Highlight'    is  1