changing the background of a Tk Label

[fcvw]

Greetings Monks,

I would like to change the background colour of a Label in Tk. I made this:

my $test = $mw->Label(-textvariable => \$some_text,
                   -justify => 'center',
                   -foreground => 'black',
                   -background => \$bg_colour,
                  );

Unfortunately, this does not work (unknown color name "SCALAR(0x8322488)"...). Is there a trick to change the background colour?

Update: The reference was the result of some experimenting. When I remove it, the error is gone, but I still cannot change the colour. I get and keep the background colour when $test is created.
Thank you all, F.

[brian_d_foy]

You're giving the -background attribute a reference to a scalar. You just want the scalar value.

my $test = $mw->Label(
    ...,
    -background => $bg_colour,
    );

[polettix]

Why the reference?

my $test = $mw->Label(-textvariable => \$some_text,
                      -justify => 'center',
                      -foreground => 'black',
                      -background => $bg_colour,  # Removed backslash
                     );

[tall_man]

I think I know what you want to do. You wish to reconfigure the color after the widget has been created. What you need is something like this:

$test->configure(-background => $bg_color).

[Anonymous Monk]

This is the answer I was looking for.
Thank you very much!