Red
Yellow
Orange
Blue
Black
Brown
Green
White

<div>
<% $color_selector %>
</div>

my %all_colors = (
    1 => 'Red',
    2 => 'Yellow',
    3 => 'Orange',
    4 => 'Blue',
    5 => 'Black',
    6 => 'Brown',
    7 => 'Green',
    8 => 'White',
);

my $color_selector = '<select name="all_colors">';

foreach my $color (sort {$all_colors{$a} cmp $all_colors {$b}} keys %all_colors ) {
    $color_selector .= qq~<option value="$color">$all_colors{$color}</option>~;
}
$color_selector .= '</select>';

use constant MAIN_COLORS => {
    1 => 'Red',
    2 => 'Yellow',
    3 => 'Orange',
    4 => 'Blue',
};

sub main_colors {
    return keys %{MAIN_COLORS()};
}

<div>
<input type="checkbox" name="maincolors" value="1" class="inputCheckbox" /> Main Colors
<input type="checkbox" name="resetofcolors" value="1" class="inputCheckbox" /> Rest of the Colors
</div>