[development] problem select multiple

[Damian Adriel Perez Valdes]

Hello:

this is my select multi form

'color' => array (
                '#type' => 'select',
                '#title' => t('Color'),
                '#size' => '10',
                '#multiple' => 'TRUE',
                '#default_value' => $selected,
                '#options' => $select_colors,


how can I insert the values in database ? how can I read values from
databases ?

Thanks.