LOOP AT i_selected_rows INTO w_selected_rows.
read table lt_final into ls_final index w_selected_rows-index.
ls_stylerow-fieldname = 'MATNR'.
ls_stylerow-style = cl_gui_alv_grid=>MC_STYLE_ENABLED.
append ls_stylerow TO ls_final-field_style.
MODIFY table lt_final FROM ls_final TRANSPORTING field_style.
CLEAR ls_stylerow.
ENDLOOP.