I would like to modify the width of the search input box that is embedded by the [SEARCH] token.  The token seem to fix the value at 75px, but I would like to increase this to 150px.  If I view source in my browser against a rendered repository template that includes the [SEARCH] token, I see this:

<br><span class="normal">Search</span>
<input name="dnn$ctr739$Repository$__Search" id="dnn_ctr739_Repository___Search" class="normal" style="width: 75px;" type="text">

I cannot figure how to change this width value.  I have searched all of the *.xml files in every available template for a [SEARCH] token, but unlike every other token, it does not appear to exist in these files.  I have even tried added the following to default/header.xml (basing it on the [CATEGORIES] token):

    <Object>
        <Token>[SEARCH]</Token>
        <Settings>
            <Setting>
                <Name>Width</Name>
                <Value>150</Value>
            </Setting>
        </Settings>
    </Object>

The above had no discernable effect.  What am I missing?  It is it at all possible to reset the width of the search input?