[ 'S','Supplier Returns v1.0.... uses the S and $menu->update_status('') if $key eq 'S'; use a different letter. You also are hitting the maximum?

The color is simple (a feature to prevent color bleeding). The style is by DEFAULT the value CLEAR, which means "nothing". so you need to unset it to make it work:

   item_fgcolor => "YELLOW",
   item_style => [],
[download]

item_style: must be one or more of BLINK, REVERSE, BOLD, UNDERLINE and CLEAR

edit:

also, end your script with:

$menu->pos($menu->item_count() + 7, 1);
[download]

It will move the cursor to the bottom of your menu