Show a simple example. In the meantime, this should work for you.

#!/usr/bin/perl
use strict;
use warnings;
use Tk;
use Tk::LabFrame;
use Tk::BrowseEntry;

my $main = MainWindow->new();

$main->fontCreate('big', -size=> 24 );

    my $tx  = 'Larry';

    my $fr = $main->LabFrame(
        -label     => '3 Stooges',
        -labelside => 'acrosstop',
    )->pack();

    my @choices = ( 'Curly', 'Larry', 'Moe' );
   
    my $be = $fr->BrowseEntry(
        -label     => 'Whoop Whoop',
        -labelPack => [
            -side   => 'left',
            -anchor => 'w',
            -expand => 1,
            -padx   => 4
        ],
        -font => 'big',
        -width    => 20,
        -state    => 'normal',
        -choices  => \@choices,
        -variable => \$tx
    )->pack( -side => 'top', -anchor => 'e' );

    $be->Subwidget('entry')->Subwidget('entry')->configure(
        '-background' => 'white',
        '-fg'         => 'red'
    );
    $be->Subwidget("slistbox")->configure( -background => 'white' );

    $be->Subwidget('entry')->Subwidget('entry')->configure(
        '-background' => 'white',
        '-fg'         => 'red'
    );
    $be->Subwidget("slistbox")->configure( -background => 'white' );

 
    my @choices1 = ( 'A', 'B', 'C' );
    my $tx1 = 'B';
   
    my $be1 = $fr->BrowseEntry(
        -label     => 'Select',
        -labelPack => [
            -side   => 'left',
            -anchor => 'w',
            -expand => 1,
            -padx   => 4
        ],
        -font => 'big',
        -width    => 20,
        -state    => 'normal',
        -choices  => \@choices1,
        -variable => \$tx1
    )->pack( -side => 'top', -anchor => 'e' );

    $be1->Subwidget('entry')->Subwidget('entry')->configure(
        '-background' => 'white',
        '-fg'         => 'blue'
    );
    $be1->Subwidget("slistbox")->configure( -background => 'white' );

    $be1->Subwidget('entry')->Subwidget('entry')->configure(
        '-background' => 'white',
        '-fg'         => 'blue'
    );
    $be1->Subwidget("slistbox")->configure( -background => 'white' );

MainLoop();
[download]

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