Example of full skin

Declaring skins in 6.x-2.x:

; Groups
skinr[options][groups][links][title] = Links
skinr[options][groups][links][collapsed] = 1

; Menu styles
skinr[MYTHEME_menus][title] = Menu styles
skinr[MYTHEME_menus][type] = select
skinr[MYTHEME_menus][group] = links
skinr[MYTHEME_menus][features][] = block
skinr[MYTHEME_menus][features][] = panels_pane
skinr[MYTHEME_menus][features][] = views_view
skinr[MYTHEME_menus][description] = select from available menu styles
skinr[MYTHEME_menus][options][1][label] = Drop downs
skinr[MYTHEME_menus][options][1][class] = dd
skinr[MYTHEME_menus][options][2][label] = One level links with separators
skinr[MYTHEME_menus][options][2][class] = inline-links
skinr[MYTHEME_menus][options][3][label] = Links as columns with sub-options below
skinr[MYTHEME_menus][options][3][class] = column-links clearfix

Declaring skins in 7.x-2.x:

<?php
/**
 * Implements hook_skinr_group_info().
 */
function MYTHEME_skinr_group_info() {
 
$groups['MYTHEME_links'] = array(
   
'title' => t('Links'),
   
'description' => t('Choose one or more styles to apply to the links of this element.'),
  );
  return
$groups;
}
/**
 * Implements hook_skinr_skin_info().
 */
function MYTHEME_skinr_skin_info() {
 
$skins['MYTHEME_menus'] = array(
   
'title' => t('Menu styles'),
   
'description' => t('Select from available menu styles.'),
   
'type' => 'select',
   
'group' => 'MYTHEME_links',
   
'default status' => '1',
   
'theme hooks' => array('block', 'panels_pane', 'views_view', 'region'),
   
'options' => array(
     
'inline-links' => array(
       
'title' => t('One level links with separators'),
       
'class' => array('inline-links'),
      ),
     
'column-links' => array(
       
'title' => t('Links as columns with sub-options below'),
       
'class' => array('column-links', 'clearfix'),
      ),
    ),
  );
  return
$skins;
}
?>