如何用delphi找查word文档中的指定字符串，找到后将字符串改变颜色

怎么用delphi找查word文档中的指定字符串，找到后将字符串改变颜色
下面是一段查找替换程序，但就是不知道怎么替换同时改变颜色？
var vWordApp,Tbl:Variant;
  i:integer;
  FindText, MatchCase, MatchWholeWord, MatchWildcards, MatchSoundsLike,
  MatchAllWordForms, Forward, Wrap, Format, ReplaceWith, Replace,matchkashida,matchdiacritics,matchAleFhamza,matchcontrol: OleVariant;
  ItemIndex,FileName,Emp ,fmt :OleVariant ;
  visible,Template,NewTemplate,DocuType: OleVariant;

Begin
// NewTemplate:=false;
// DocuType:=wdNewBlankDocument;
// Visible:=true;
// Template:='f:\lx\lx.dot';
  //然后使用
// wordapplication1.documents.add(Template,NewTemplate,DocuType,Visible);
  Emp:=EmptyParam;
  fmt:=0;
  FileName:='D:\doc1.doc';
  wordapplication1.documents.Open(FileName,Emp,Emp,Emp,Emp,Emp,Emp,Emp,Emp,Emp,Emp,Emp,Emp,Emp,fmt);
  wordapplication1.Visible:=true;
  ItemIndex := 1;
  WordDocument1.ConnectTo(WordApplication1.Documents.Item(ItemIndex));


 //worddocument1.Range.Font.Color;
  findtext:= '<#Name>';
  MatchCase := False;
  MatchWholeWord := True;
  MatchWildcards := False;
  MatchSoundsLike := False;
  MatchAllWordForms := false;
  Forward := true;
  Wrap := wdFindContinue;
  Format := False;
  matchcontrol:=false;

  ReplaceWith:= 'delphi';
  //replacewith
  Replace := wdReplaceAll;

  matchkashida:=true;
  matchdiacritics:=true;
  matchAleFhamza:=true;

  worddocument1.range.Find.Text:=findtext;
  worddocument1.Range.Find.Font.Color:=200;
  //worddocument1.Range.Font.Color:=200;
  //wordapplication1.Selection.Font.Color:=200;
// WordDocument1.ActiveWindow.ActivePane.View.SeekView:=wdSeekCurrentPageHeader;
// WordDocument1.Range.Find.ClearFormatting;
// WordDocument1.Range.Find.Replacement.ClearFormatting;
  worddocument1.range.find.execute( findtext, matchcase, matchwholeword,
  matchwildcards, matchsoundslike, matchallwordforms, forward,
  wrap, format, replacewith, replace,matchkashida,matchdiacritics,
  matchAleFhamza,matchcontrol ) ;

 end;

------解决方案--------------------
http://topic.****.net/t/20061126/11/5185772.html 
看看这个吧， 我想一般回答没他的精辟了。
------解决方案--------------------
这个就是调用WORD函数的问题。