title: Wordpress Widget: display child pages from specific page
body: <p>I've downloaded a couple of plugins already, but none satisfy what I need: <strong>I need a widget to display the child pages of a specific parent page (and to customize it via CSS to include an icon on each 'li' and a certain background-color, borders.).</strong>
  I've also downloaded a plugin which enabled me to add categories to each page, thinking that then I could use a widget that displays specific pages titles from a determined category (and in that way solve the issue), but I haven't found one to do so. </p>
  
  <p>Should I edit the default pages widget (which actually lets me sort via page ID, Page Title and Page order), to enable it to also sort by pages from a speficic category? I don't know much PHP to do so.</p>
  
  <p>I though of using the default page widget and exclude every page ID but the ones I need to appear, but then when some other person makes a new page, it will be displayed by the widget, and that should not happen as only the child themes of a specific parent page should be displayed.</p>