category description – background color

Hey ??
I’d like to have the background color for category description, if this description exists, but if it doesn’t, a page should be without any changes.

I have something like this:

‘<?php
$category_description = category_description();
if ( ! empty( $category_description ) ) {
echo apply_filters( ‘category_archive_meta’, ‘<div class=”opis_kategorii”>’ . $category_description . ‘</div>’ );
}
else ”;

?>’

with orange background when category desc is empty.

Thanks for help