Win32::OLE->FreeUnusedLibraries ();
Win32::OLE->Initialize(Win32::OLE::COINIT_MULTITHREADED);
my $app;
my $project;
eval{
    $app = Win32::OLE->new('MSProject.Application') or print "Couldn't open project '$MSPfilename'\n";
    $app->{'DisplayAlerts'} = 0; 
    $app->{'Visible'}       = 0;
    $app->{'AskToUpdateLinks'} = 0;
    $app->OptionsGeneral(0,0,0);    
    $app->FileOpen($MSPfilename);
};

if ($@)
{
	my $msg = "A problem was encountered when accessing thefile '$MSPfilename'\n" . Win32::OLE->LastError()."\n";
	print "$msg\n";
}
$project = $app->{Projects}->Item(1);

if($app)
{
	if (($project) && $project->Tasks)
	{
		my $count = $project->Tasks->Count();
        for my $indx (1..$project->Tasks->Count())
		{
			my $Task = $project->Tasks($indx);
            $Task->{Cell}->{Name}->{CellColor} = 1;
		}
	}#End of if appTasks loop.
    $project->Save();
}#End of if app loop.
$app->Quit();