/*****************CALENDARIO*****************/

#wp-calendar {
empty-cells: show;
font-size: 0.9em;
text-align: center;
font-family :tahoma;
margin: 0;
width: 100%;}

/* -- DIAS DE POSTS E LINKS -- */

#wp-calendar #prev a {
font-size: 10px;
letter-spacing: 1px;
font-family :tahoma;
text-align: left;
border: 0px;
font-weight: bold;}

#wp-calendar #next a {
text-align: right;
font-size: 10px;
font-family :tahoma;
letter-spacing: 1px;
border: 0px ;
background-color: #A8DEE7;
font-weight: bold;}

#wp-calendar a {
font-size: 10px;
font-weight: bold;
font-family :tahoma;
border: 0px;
background-color: #A8DEE7;
color: #FFFFFF;}

#wp-calendar a:hover  {
font-size: 10px;
font-weight: bold;
background-color: #A8DEE7;
font-family :tahoma;
border: 0px;
color: #ffffff;}

/* -- DEMAIS DIAS -- */

#wp-calendar td {
color: #FFFFFF;
font-size: 10px;
font-family :tahoma;
letter-spacing: normal;
padding: 2px 0;
background-color: #A8DEE7;
border: 1px solid #ffffff;
border-width: 0px 1px 1px 0px;
text-align: center;}

#wp-calendar td:hover{
color: #FFFFFF;
background-color: #FFBBDF;
border: 1px solid #ffffff;
border-width: 1px 0 0 1px;
}

/* -- MES -- */

#wp-calendar caption {
font-size : 11px;
line-height : 11px;
text-transform:uppercase;
text-align: center;
font-family: tahoma;
font-weight: bold;
color: #ffffff;
background-color: #A8DEE7;
border: 1px solid #ffffff;
border-width: 0 1px 1px 0;
padding: 4px;
margin:2px;}

/* -- DIAS DA SEMANA -- */

#wp-calendar th {
color: #ffffff;
text-align: center;
font-family :tahoma;
font-size: 10px;
font-style: normal;
border: 1px solid #ffffff;
border-width: 1px 1px 1px 1px;
text-transform: uppercase;
background-color: #A8DEE7;
}

/* -- DATA ATUAL -- */

#wp-calendar #today {
background-color: #FFBBDF;
border: 1px solid #ffffff;
border-width: 0px 1px 1px 0px;
font-weight: bolder;
color: #ffffff;
text-align: center;
}

* Altere as cores de acordo com sua preferência.

- Coloque o código onde você queira que o calendário apareça:

<table id="wp-calendar" summary="Calendar">
	<caption>March 2010</caption>
	<thead>
	<tr>
		<th abbr="Sunday" scope="col" title="Sunday">S</th>
		<th abbr="Monday" scope="col" title="Monday">M</th>
		<th abbr="Tuesday" scope="col" title="Tuesday">T</th>
		<th abbr="Wednesday" scope="col" title="Wednesday">W</th>
		<th abbr="Thursday" scope="col" title="Thursday">T</th>
		<th abbr="Friday" scope="col" title="Friday">F</th>
		<th abbr="Saturday" scope="col" title="Saturday">S</th>
	</tr>
	</thead>

	<tfoot>
	<tr>
		<td abbr="February" colspan="3" id="prev"><a href="http://dannykitty.com/2010/02/" title="View posts for February 2010">&laquo; Feb</a></td>
		<td class="pad">&nbsp;</td>
		<td colspan="3" id="next" class="pad">&nbsp;</td>
	</tr>
	</tfoot>

	<tbody>
	<tr>
		<td colspan="1" class="pad">&nbsp;</td><td><a href="http://dannykitty.com/2010/03/01/" title="Mosaic Monday: Ladybugs">1</a></td><td><a href="http://dannykitty.com/2010/03/02/" title="Filme: The Princess and the Frog">2</a></td><td>3</td><td><a href="http://dannykitty.com/2010/03/04/" title="Resumo da Semana&#8230;, Barbie by Christian Louboutin">4</a></td><td>5</td><td>6</td>
	</tr>
	<tr>
		<td>7</td><td><a href="http://dannykitty.com/2010/03/08/" title="Mosaic Monday: Bento">8</a></td><td><a href="http://dannykitty.com/2010/03/09/" title="Filme: Alice in Wonderland">9</a></td><td>10</td><td>11</td><td><a href="http://dannykitty.com/2010/03/12/" title="Do bom e do melhor&#8230;">12</a></td><td>13</td>
	</tr>
	<tr>
		<td>14</td><td id="today">15</td><td>16</td><td>17</td><td>18</td><td>19</td><td>20</td>
	</tr>
	<tr>
		<td>21</td><td>22</td><td>23</td><td>24</td><td>25</td><td>26</td><td>27</td>
	</tr>
	<tr>
		<td>28</td><td>29</td><td>30</td><td>31</td>
		<td class="pad" colspan="3">&nbsp;</td>
	</tr>
	</tbody>
	</table>

Seu calendário ficará assim: