Adding color to few rows in ALV report output

Question

Hi,
I have developed a ALV report program which displays the project details of the employees.In the output the rows containing the employees who have been part of the project should be displayed in different color.I have used necessary code for this but still the rows are not displayed in different color.
Given below is my program.Please suggest me possible solution for this.
REPORT  ZPROJ_ALL_DETAILS.
TYPE-POOLS: SLIS.
Tables: zheempl,zhealoc,zheproj,zheskil.
types: begin of ty_zheempl,
      empid like zheempl-empid,
      grade like zheempl-grade,
      location like zheempl-location,
      pu like zheempl-pu,
      name1 like zheempl-name1,
      end of ty_zheempl.
types: begin of ty_zhealoc,
      project like zhealoc-project,
      stdat like zhealoc-stdat,
      endat like zhealoc-endat,
      role like zhealoc-role,
      end of ty_zhealoc.
types: begin of ty_output,
      empid like zheempl-empid,
      grade like zheempl-grade,
      location like zheempl-location,
      pu    like zheempl-pu,
      name1 like zheempl-name1,
      role like zhealoc-role,
      stdat like zhealoc-stdat,
      endat like zhealoc-endat,
      cellcolor(4) type c,
      end of ty_output.
data: t_zheempl type standard table of ty_zheempl,
      t_zhealoc type standard table of ty_zhealoc,
      t_output type standard table of ty_output with header line.
data: wa_zheempl type ty_zheempl,
      wa_zhealoc type ty_zhealoc,
      wa_output type ty_output.
DATA : T_FIELDCAT TYPE slis_t_fieldcat_alv.
Data : wa_fieldcat type slis_fieldcat_alv.
Data: it_top TYPE slis_t_listheader,
      wa_top TYPE slis_listheader.
Data: t_cellcolor TYPE lvc_t_scol WITH HEADER LINE,
      wa_cellcolor TYPE lvc_s_scol.
Data: t_layout TYPE slis_layout_alv.
*selection-screen
selection-screen: begin of block b1 with frame title text-001.
select-options: s_proj for wa_zhealoc-project,
                s_empid   for wa_zheempl-empid.
parameters:     p_date like sy-datum obligatory.
selection-screen: end of block b1.
selection-screen: begin of block b2 with frame title text-002.
parameters:      p_prtosr  radiobutton group g1 default 'X',
                 p_prusly  radiobutton group g1.
selection-screen: end of block b2.
selection-screen: begin of block b3 with frame title text-003.
parameters:      p_dwtodk as checkbox default 'X'.
selection-screen: end of block b3.
selection-screen: begin of block b4 with frame title text-004.
parameters:      p_shwhis as checkbox default 'X'.
selection-screen: end of block b4.
Start-of-selection
  IF p_shwhis = 'X'.
SELECT l~empid
       l~grade
       l~location
       l~pu
       l~name1
       c~role
       c~stdat
       c~endat
  INTO TABLE t_output
  FROM ( zheempl AS l
  INNER JOIN zhealoc
  AS c ON lempid = cempid )
  where project IN s_proj
  AND endat < p_date
  OR endat > p_date.
   t_output-cellcolor = 'C310'.
   MODIFY t_output transporting cellcolor where endat < p_date.
  ELSE.
  select l~empid
       l~grade
       l~location
       l~pu
       l~name1
       c~role
       c~stdat
       c~endat
  INTO TABLE t_output
  FROM ( zheempl AS l
  INNER JOIN zhealoc
  AS c ON lempid = cempid )
  WHERE project in s_proj
  AND   endat > p_date.
   ENDIF.
  wa_fieldcat-col_pos = '1'.
  wa_fieldcat-tabname = 't_output'.
  wa_fieldcat-fieldname = 'EMPID'.
  wa_fieldcat-seltext_m = 'Employee ID'.
  wa_fieldcat-hotspot = 'X'.
  APPEND wa_fieldcat to t_fieldcat.
  CLEAR wa_fieldcat.
  wa_fieldcat-col_pos = '2'.
  wa_fieldcat-tabname = 't_output'.
  wa_fieldcat-fieldname = 'NAME1'.
  wa_fieldcat-seltext_m = 'Name 1'.
  wa_fieldcat-hotspot = 'X'.
  APPEND wa_fieldcat to t_fieldcat.
  CLEAR wa_fieldcat.
  wa_fieldcat-col_pos = '3'.
  wa_fieldcat-tabname = 't_output'.
  wa_fieldcat-fieldname = 'ROLE'.
  wa_fieldcat-seltext_m = 'Role of employee in the project'.
  wa_fieldcat-hotspot = 'X'.
  APPEND wa_fieldcat to t_fieldcat.
  CLEAR wa_fieldcat.
  wa_fieldcat-col_pos = '4'.
  wa_fieldcat-tabname = 't_output'.
  wa_fieldcat-fieldname = 'STDAT'.
  wa_fieldcat-seltext_m = 'Start Date'.
  wa_fieldcat-hotspot = 'X'.
  APPEND wa_fieldcat to t_fieldcat.
  CLEAR wa_fieldcat.
  wa_fieldcat-col_pos = '5'.
  wa_fieldcat-tabname = 't_output'.
  wa_fieldcat-fieldname = 'ENDAT'.
  wa_fieldcat-seltext_m = 'End Date'.
  wa_fieldcat-hotspot = 'X'.
  APPEND wa_fieldcat to t_fieldcat.
  CLEAR wa_fieldcat.
  wa_fieldcat-col_pos = '6'.
  wa_fieldcat-tabname = 't_output'.
  wa_fieldcat-fieldname = 'GRADE'.
  wa_fieldcat-seltext_m = 'Salary Level'.
  wa_fieldcat-hotspot = 'X'.
  APPEND wa_fieldcat to t_fieldcat.
  CLEAR wa_fieldcat.
  wa_fieldcat-col_pos = '7'.
  wa_fieldcat-tabname = 't_output'.
  wa_fieldcat-fieldname = 'PU'.
  wa_fieldcat-seltext_m = 'Department Number'.
  wa_fieldcat-hotspot = 'X'.
  APPEND wa_fieldcat to t_fieldcat.
  CLEAR wa_fieldcat.
  wa_fieldcat-col_pos = '8'.
  wa_fieldcat-tabname = 't_output'.
  wa_fieldcat-fieldname = 'LOCATION'.
  wa_fieldcat-seltext_m = 'Work Location'.
  wa_fieldcat-hotspot = 'X'.
  APPEND wa_fieldcat to t_fieldcat.
  CLEAR wa_fieldcat.
  t_layout-no_input = 'X'.
  t_layout-colwidth_optimize = 'x'.
  t_layout-info_fieldname = 'LINE_COLOR'.
  CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
   EXPORTING
    I_INTERFACE_CHECK                 = ' '
    I_BYPASSING_BUFFER                = ' '
    I_BUFFER_ACTIVE                   = ' '
     I_CALLBACK_PROGRAM                = SY-REPID
     i_callback_top_of_page            = 'TOP'
     is_layout                         = t_layout
     IT_FIELDCAT                       = T_FIELDCAT
     i_save                            = 'X'
    TABLES
      t_outtab                          = T_OUTPUT
  EXCEPTIONS
    PROGRAM_ERROR                     = 1
    OTHERS                            = 2
  IF sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
        WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
  ENDIF.
Form top.
  Refresh it_top.
  wa_top-typ = 'S'.
  wa_top-key = 'Requestor'.
  wa_top-info = sy-uname.
  APPEND wa_top to it_top.
  CLEAR wa_top.
  wa_top-typ = 'S'.
  wa_top-key = 'Program'.
  wa_top-info = sy-repid.
  APPEND wa_top to it_top.
  CLEAR wa_top.
  wa_top-typ = 'S'.
  wa_top-key = 'Page'.
  wa_top-info = sy-pagno.
  APPEND wa_top to it_top.
  CLEAR wa_top.
  wa_top-typ = 'S'.
  wa_top-key = 'Date'.
  wa_top-info = sy-datum.
  APPEND wa_top to it_top.
  CLEAR wa_top.
  wa_top-typ = 'H'.
  wa_top-info = 'Project Details'.
  APPEND wa_top to it_top.
  CLEAR wa_top.
  CALL FUNCTION 'REUSE_ALV_COMMENTARY_WRITE'
    EXPORTING
      it_list_commentary       = it_top.
  ENDFORM.

Answer 1

{ REPORT  ZPROJ_ALL_DETAILS.
TYPE-POOLS: SLIS.
Tables: zheempl,zhealoc,zheproj,zheskil.
types: begin of ty_zheempl,
      empid like zheempl-empid,
      grade like zheempl-grade,
      location like zheempl-location,
      pu like zheempl-pu,
      name1 like zheempl-name1,
      end of ty_zheempl.
types: begin of ty_zhealoc,
      project like zhealoc-project,
      stdat like zhealoc-stdat,
      endat like zhealoc-endat,
      role like zhealoc-role,
      end of ty_zhealoc.
types: begin of ty_output,
      empid like zheempl-empid,
      grade like zheempl-grade,
      location like zheempl-location,
      pu    like zheempl-pu,
      name1 like zheempl-name1,
      role like zhealoc-role,
      stdat like zhealoc-stdat,
      endat like zhealoc-endat,
      cellcolor(4) type c,
      end of ty_output.
data: t_zheempl type standard table of ty_zheempl,
      t_zhealoc type standard table of ty_zhealoc,
      t_output type standard table of ty_output with header line,
      t_output1 type standard table of ty_output with header line.
data: wa_zheempl type ty_zheempl,
      wa_zhealoc type ty_zhealoc,
      wa_output type ty_output,
      wa_output1 type ty_output.
DATA : T_FIELDCAT TYPE slis_t_fieldcat_alv.
Data : wa_fieldcat type slis_fieldcat_alv.
Data: it_top TYPE slis_t_listheader,
      wa_top TYPE slis_listheader.
Data: t_cellcolor TYPE lvc_t_scol WITH HEADER LINE,
      wa_cellcolor TYPE lvc_s_scol.
Data: t_layout TYPE slis_layout_alv.
*selection-screen
selection-screen: begin of block b1 with frame title text-001.
select-options: s_proj for wa_zhealoc-project,
                s_empid   for wa_zheempl-empid.
parameters:     p_date like sy-datum obligatory.
selection-screen: end of block b1.
selection-screen: begin of block b2 with frame title text-002.
parameters:      p_prtosr  radiobutton group g1 default 'X',
                 p_prusly  radiobutton group g1.
selection-screen: end of block b2.
selection-screen: begin of block b3 with frame title text-003.
parameters:      p_dwtodk as checkbox default 'X'.
selection-screen: end of block b3.
selection-screen: begin of block b4 with frame title text-004.
parameters:      p_shwhis as checkbox default 'X'.
selection-screen: end of block b4.
Start-of-selection
  IF p_shwhis = 'X'.
SELECT l~empid
       l~grade
       l~location
       l~pu
       l~name1
       c~role
       c~stdat
       c~endat
  INTO TABLE t_output
  FROM ( zheempl AS l
  INNER JOIN zhealoc
  AS c ON lempid = cempid )
  where project IN s_proj
  AND endat < p_date
  OR endat > p_date.
   t_output-cellcolor = 'C310'.
   MODIFY t_output transporting cellcolor where endat < p_date.
  ELSE.
  select l~empid
       l~grade
       l~location
       l~pu
       l~name1
       c~role
       c~stdat
       c~endat
  INTO TABLE t_output
  FROM ( zheempl AS l
  INNER JOIN zhealoc
  AS c ON lempid = cempid )
  WHERE project in s_proj
  AND   endat > p_date.
   ENDIF.
  wa_fieldcat-col_pos = '1'.
  wa_fieldcat-tabname = 't_output'.
  wa_fieldcat-fieldname = 'EMPID'.
  wa_fieldcat-seltext_m = 'Employee ID'.
  wa_fieldcat-hotspot = 'X'.
  APPEND wa_fieldcat to t_fieldcat.
  CLEAR wa_fieldcat.
  wa_fieldcat-col_pos = '2'.
  wa_fieldcat-tabname = 't_output'.
  wa_fieldcat-fieldname = 'NAME1'.
  wa_fieldcat-seltext_m = 'Name 1'.
  wa_fieldcat-hotspot = 'X'.
  APPEND wa_fieldcat to t_fieldcat.
  CLEAR wa_fieldcat.
  wa_fieldcat-col_pos = '3'.
  wa_fieldcat-tabname = 't_output'.
  wa_fieldcat-fieldname = 'ROLE'.
  wa_fieldcat-seltext_m = 'Role of employee in the project'.
  wa_fieldcat-hotspot = 'X'.
  APPEND wa_fieldcat to t_fieldcat.
  CLEAR wa_fieldcat.
  wa_fieldcat-col_pos = '4'.
  wa_fieldcat-tabname = 't_output'.
  wa_fieldcat-fieldname = 'STDAT'.
  wa_fieldcat-seltext_m = 'Start Date'.
  wa_fieldcat-hotspot = 'X'.
  APPEND wa_fieldcat to t_fieldcat.
  CLEAR wa_fieldcat.
  wa_fieldcat-col_pos = '5'.
  wa_fieldcat-tabname = 't_output'.
  wa_fieldcat-fieldname = 'ENDAT'.
  wa_fieldcat-seltext_m = 'End Date'.
  wa_fieldcat-hotspot = 'X'.
  APPEND wa_fieldcat to t_fieldcat.
  CLEAR wa_fieldcat.
  wa_fieldcat-col_pos = '6'.
  wa_fieldcat-tabname = 't_output'.
  wa_fieldcat-fieldname = 'GRADE'.
  wa_fieldcat-seltext_m = 'Salary Level'.
  wa_fieldcat-hotspot = 'X'.
  APPEND wa_fieldcat to t_fieldcat.
  CLEAR wa_fieldcat.
  wa_fieldcat-col_pos = '7'.
  wa_fieldcat-tabname = 't_output'.
  wa_fieldcat-fieldname = 'PU'.
  wa_fieldcat-seltext_m = 'Department Number'.
  wa_fieldcat-hotspot = 'X'.
  APPEND wa_fieldcat to t_fieldcat.
  CLEAR wa_fieldcat.
  wa_fieldcat-col_pos = '8'.
  wa_fieldcat-tabname = 't_output'.
  wa_fieldcat-fieldname = 'LOCATION'.
  wa_fieldcat-seltext_m = 'Work Location'.
  wa_fieldcat-hotspot = 'X'.
  APPEND wa_fieldcat to t_fieldcat.
  CLEAR wa_fieldcat.
  t_layout-no_input = 'X'.
  t_layout-colwidth_optimize = 'x'.
  t_layout-info_fieldname = 'LINE_COLOR'.
  CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
   EXPORTING
    I_INTERFACE_CHECK                 = ' '
    I_BYPASSING_BUFFER                = ' '
    I_BUFFER_ACTIVE                   = ' '
     I_CALLBACK_PROGRAM                = SY-REPID
     i_callback_top_of_page            = 'TOP'
     is_layout                         = t_layout
     IT_FIELDCAT                       = T_FIELDCAT
     i_save                            = 'X'
    TABLES
      t_outtab                          = T_OUTPUT
  EXCEPTIONS
    PROGRAM_ERROR                     = 1
    OTHERS                            = 2
  IF sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
        WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
  ENDIF.
Form top.
  Refresh it_top.
  wa_top-typ = 'S'.
  wa_top-key = 'Requestor'.
  wa_top-info = sy-uname.
  APPEND wa_top to it_top.
  CLEAR wa_top.
  wa_top-typ = 'S'.
  wa_top-key = 'Program'.
  wa_top-info = sy-repid.
  APPEND wa_top to it_top.
  CLEAR wa_top.
  wa_top-typ = 'S'.
  wa_top-key = 'Page'.
  wa_top-info = sy-pagno.
  APPEND wa_top to it_top.
  CLEAR wa_top.
  wa_top-typ = 'S'.
  wa_top-key = 'Date'.
  wa_top-info = sy-datum.
  APPEND wa_top to it_top.
  CLEAR wa_top.
  wa_top-typ = 'H'.
  wa_top-info = 'Project Details'.
  APPEND wa_top to it_top.
  CLEAR wa_top.
  CALL FUNCTION 'REUSE_ALV_COMMENTARY_WRITE'
    EXPORTING
      it_list_commentary       = it_top.
  ENDFORM.}