DataGrid in WPF Setting column header style

Boss command, come on, slightly geek black style is too dark, interface style for me to change the sun point. Next various adjustments.

Remember how to set the DataGrid column header style.

<datagrid ...> ...
     <DataGrid.ColumnHeaderStyel>
          <style targettype= "{x:type Datagridcolumnheader}" >
               <setter Property= "Background" value= "DodgerBlue"/> <setter property= "foreground
               " value= "white"/>
               < Setter property= "horizontalcontentalignment" value= "Center"/>
          </Style>
     </ Datagrid.columnheaderstyel>
</DataGrid>