fpspreadsheet: More general handling of conditional colors in number format strings.

git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@4091 8e941d3f-bd1b-0410-a28a-d453659cc2b4

components/fpspreadsheet/fpsnumformatparser.pas

@@ -301,6 +301,8 @@ begin
           if section^.Elements[el].IntValue < 0 then
             section^.Kind := section^.Kind + [nfkTimeInterval];
         end;
+      nftColor:
+        section^.Kind := section^.Kind + [nfkHasColor];
     end;
 
   if FStatus <> psOK then