Run the following code to create custom styles
ods path   SASHELP.TMPLMST(update);
ods path show;
proc template;
   define style MyCustomstyle;
   parent=Styles.sasweb;
   STYLE Header /
   FONT_FACE = "Arial, Helvetica, sans-serif"
   FONT_SIZE = 10pt
   FONT_WEIGHT = bold
   FONT_STYLE = roman
   FOREGROUND = black
   BACKGROUND = cx6495ed
;
STYLE SystemTitle /
   FONT_FACE = "Arial, Helvetica, sans-serif"
   FONT_SIZE = 10pt
   FONT_WEIGHT = bold
   FONT_STYLE = roman
   FOREGROUND = cx003399
   BACKGROUND = cxffffff
;
STYLE DataEmphasis /
   FONT_FACE = "Arial, Helvetica, sans-serif"
   FONT_SIZE = 2
   FONT_WEIGHT = medium
   FONT_STYLE = roman
   FOREGROUND = cx000000
   BACKGROUND = cxffffff
;
end;
run;
Hope this helps