Esta web es de un multiforo que usa Phpbb...
Pero quiero que tenga un foro con los colores parecidos en Mybb.
Tambien lo que puedes hacer es copiar el codigo por ejemplo del header:
Código:
<div id="page-header"><div class="headerbar"><div class="inner"><span class="corners-top"><span></span></span><div id="logo-desc">
        <div align="center"><a href="/forum.htm" id="logo"><img src="http://i80.servimg.com/u/f80/14/30/14/81/iii10.jpg" alt="A la cara"></a></div>
        <div id="site-title"><h1 align="center">A la cara</h1></div><p align="center">Las cosas como son,claras.</p>
</div><span class="corners-bottom"><span></span></span></div></div><div class="navbar"><div class="inner"><span class="corners-top"><span></span></span><ul class="linklist navlinks"><li>
  <div align="center"><a class="mainmenu" href="/forum.htm" rel="nofollow"><img id="i_icon_mini_index" src="http://hitskin.com/themes/10/93/40/i_icon_mini_index.png" alt="Índice" title="Índice" border="0" hspace="0"></a><a class="mainmenu" href="/portal.htm" rel="nofollow"><img id="i_icon_mini_portal" src="http://hitskin.com/themes/10/93/40/i_icon_mini_portal.png" alt="Portal" title="Portal" border="0" hspace="0"></a><a class="mainmenu" href="/faq.htm" rel="nofollow"><img id="i_icon_mini_faq" src="http://hitskin.com/themes/10/93/40/i_icon_mini_faq.png" alt="FAQ" title="FAQ" border="0" hspace="0"></a><a class="mainmenu" href="/search.forum" onClick="showhide(document.getElementById('search_menu')); return false;" rel="nofollow"><img id="i_icon_mini_search" src="http://hitskin.com/themes/10/93/40/i_icon_mini_search.png" alt="Buscar" title="Buscar" border="0" hspace="0"></a><a class="mainmenu" href="/memberlist.forum" rel="nofollow"><img id="i_icon_mini_members" src="http://hitskin.com/themes/10/93/40/i_icon_mini_members.png" alt="Miembros" title="Miembros" border="0" hspace="0"></a><a class="mainmenu" href="/groupcp.forum" rel="nofollow"><img id="i_icon_mini_groups" src="http://hitskin.com/themes/10/93/40/i_icon_mini_groups.png" alt="Grupos de Usuarios" title="Grupos de Usuarios" border="0" hspace="0"></a><a class="mainmenu" href="/profile.forum?mode=register" rel="nofollow"><img id="i_icon_mini_register" src="http://hitskin.com/themes/10/93/40/i_icon_mini_register.gif" alt="Registrarse" title="Registrarse" border="0" hspace="0"></a><a class="mainmenu" href="/login.forum?connexion" rel="nofollow"><img id="i_icon_mini_login" src="http://hitskin.com/themes/10/93/40/i_icon_mini_login.png" alt="Conectarse" title="Conectarse" border="0" hspace="0"></a>
    <div align="center"></div>
  </div>
</li><li></li>
</ul>
    <ul class="linklist navlinks">
      <li>
        <div align="center">
          <script type="text/javascript">//<![CDATA[
insert_search_menu_new();//]]>
      </script>
          </div>
      <div class="overview row3" id="search_menu" style="display: none; position: absolute; width: 350px; z-index: 10000;"><form action="/search.forum" method="get">
        
        
        <div align="center">
          <input name="mode" value="searchbox" type="hidden">
          </div>
          <p align="center" class="title-overview row2">Buscar</p><p align="center" class="center-overview"><input class="inputbox medium" name="search_keywords" type="text"><input class="button1" value="Go" type="submit"><br>Resultados por: <label for="rposts"><input id="rposts" name="show_results" value="posts" type="radio"> Mensajes</label> <label for="rtopics"><input id="rtopics" name="show_results" value="topics" checked="checked" type="radio"> Argumentos</label></p><hr align="center" class="dashed"><p align="center" class="center-overview"><a href="/search.forum" rel="nofollow"><img src="http://illiweb.com/fa/icon_mini_search.gif" alt="" width="12" height="13"> Búsqueda avanzada</a></p></form></div>
      </li>
      <li></li>
      <li>
        <input name="search_keywords" id="keywords" maxlength="128" class="inputbox search" value="Buscar..." onClick="if (this.value == 'Buscar...') this.value = '';" onBlur="if (this.value == '') this.value = 'Buscar...';" type="text">
        <input class="button2" value="Buscar" type="submit">
      </li>
    </ul>
    </div>
</div></div>

y sustituirlo por el header del skin que uses