$string='Match';
#
#define Itemstyles
#
$tree1_match_style = $tree1->ItemStyle('text', -foreground=>'green');
$tree2_match_style = $tree1->ItemStyle('text', -foreground=>'green');

#
#add node to tree1 and tree2
#
$tree1->add($indent0_line,-text=> $indent0_line,-itemtype=>'text');
$tree2->add($indent0_line,-text=> $indent0_line,-itemtype=>'text');
 
#
#add style to node entry 
#
$tree1->entryconfigure($indent0_line,-style=>$tree1_match_style);
#
#


#retrieve style from node
#
my $wanted_style = $tree1->entrycget($indent0_line, q{-style});

#
#configure tree2 node  with retrieved style from tree1 node
#
$tree2->entryconfigure($indent0_line,-style=>$wanted_style);