Ok haven't tested since I don't use it but try this
<li>
<ul class="ipsType_small fbkProfStat uP">
<li>
<div class="ipsBadge" style="background:#282828;"><a href='{$member['fbLink']}'>User's Feedbacks</a></div>
</li>
<li>
<span class="value <if test="$member['feedb_percent'] > 99">positive<else /><if test="$member['feedb_percent'] < 0 ">neutral<else /><if test="$member['feedb_percent'] < 40 ">negative</if></if></if>"><if test="$member['feedb_percent']<0">N/A<else />{$member['feedb_percent']}%</if></span>
<span class="value positive" data-tooltip="{$this->lang->words['totalpos']}">{$member['feedb_pos']}</span>
<span class="value" data-tooltip="{$this->lang->words['totalneut']}">{$member['feedb_neu']}</span>
<span class="value negative" data-tooltip="{$this->lang->words['totalneg']}">{$member['feedb_neg']}</span>
</li>
</ul>
</li>
On the other I am not sure about your skin but in the globaltemplate look for
<!-- ::: BRANDING STRIP: Logo and search box ::: -->
<div id='branding'>
<div class='main_width'>
to add a background picture behind the logo you can change the main-width and add background url like this
<div id='branding'> style="background-image: url({$this->settings['img_url']}/test-background.gif); height: 100%; width: 100%; ">
Change the width and pic name to match your skin. Or you can add it in the css for branding. (ipb_styles.css)