سلام.
void __fastcall TForm1::Edit1Enter(TObject *Sender)
{
dynamic_cast< TEdit * >( Sender )->Color = 0x00FFFFFF;
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Edit1Exit(TObject *Sender)
{
dynamic_cast< TEdit * >( Sender )->Color = 0x00808080;
}