Text In Header

[helmer.co]

I found the following code in another thread. The question I have is how to change the color of the text to white and increase the font size. Could somebody please add the code and repost it please.

<div class="above_body"> <!-- closing tag is in template navbar --> <div id="header" class="floatcontainer doc_header">
<vb:if condition="$stylevar['titleimage']"><div><a name="top" href="{vb:link forumhome}" class="logo-image"><table> <tr> <td> <img src="{vb:stylevar titleimage}" alt="{vb:rawphrase x_powered_by_vbulletin, {vb:raw vboptions.bbtitle}}" /> </td> <td> <div class="header_text">TEXT TO DISPLAY IN HEADER</div> </td> </tr> </table></a></div></vb:if></vb:if>

Thanks,

John