I am trying to add two elements to an existing PowerPoint if a specific term (in my example "transformation" is found: 1) a text object and with a red background (no transparency) and 2) a note/comment. I manage to do 1) but can't find the option to set the background but I fail completely on point 2). Any suggestion?

#!perl
use strict;
use warnings;

use utf8;
use Cwd;
use Win32::OLE;
use Win32::OLE 'CP_UTF8';
use Win32::OLE::Const 'Microsoft PowerPoint';
$Win32::OLE::Warn = 3;
$Win32::OLE::CP = CP_UTF8;

my $file = "original.pptx";
my $dir = getcwd();
my $filename = $dir . '\\' . $file; 

print ("Starting PowerPoint\n");
my $process = Win32::OLE->GetActiveObject('Powerpoint.Application')
   || Win32::OLE->new('Powerpoint.Application', 'Quit');

print ( "Opening '$filename'\n" );
my $ppt =  $process->Presentations->Open($filename);

$file =~ s/original/TCF6203/;
$filename = "$dir/$file";

my @activeslides = $process->ActivePresentation->Slides->in;
foreach my $slide (@activeslides) {
  my $name = $slide->{Name};
  foreach my $shape ($slide->Shapes->in){
    if ($shape->TextFrame->HasText){ #TO DO: to get all elements I sho
+uld create a loop here
      if ($shape->HasTextFrame){
        my $text  = $shape->TextFrame->TextRange->Text;
        print "$name\nText $text = ";
        if ($text =~ /transformation/){
          my $TextBox=$slide->Shapes->AddTextbox({Orientation=>1, 
                                      Left=>5, 
                                      Top=>5,
                                      Width=>250,
                                      Height=>250,
                                      });
            $TextBox->TextFrame->TextRange->{Text} ="Big Ole Test";
            #$slide->NotesPage->TextRange->{Text} ="Big Ole Test"; #CO
+MMENT OUT TO TRY TO ADD NOTE/COMMENT
          print "OK\n";
        } else {
          print "NOTHING TO DO\n";
        };
      }
    }
  }
}

print ( "Saving '$filename'\n" );
$ppt->SaveAs($filename);
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