update theme until next build

profiles/wcm_base/themes/ocio_omega_base/panels/ocio-omega-threecol.css

+/**
+ * @file
+ * ocio-omega-threecol panel layout
+**/
+
+.ocio-omega-threecol-container .panel-pane {
+  margin-bottom: 1em;
+}
+
+.ocio-omega-threecol-column-content-region {
+  min-height: 1px;
+  width: 33.9%;
+  float: left;
+}
+
+.ocio-omega-threecol-column-content-region-inner {
+  margin-right: 5%;
+}
+
+.ocio-omega-threecol-column3 {
+  width: 32.2%;
+}
+
+.ocio-omega-threecol-column3-inner {
+  margin-right: 0;
+}
+
+/* iPad or less */
+@media only screen and (max-width: 760px) {
+  .ocio-omega-threecol-column-content-region,
+  .ocio-omega-threecol-column3 {
+    width: 100%;
+    float: none;
+  }
+
+  .ocio-omega-threecol-column-content-region-inner {
+    margin-right: 0;
+  }
+}

profiles/wcm_base/themes/ocio_omega_base/panels/ocio-omega-threecol.inc

+<?php
+// Plugin definition
+$plugin = array(
+  'title' => t('Three Column'),
+  'icon' => 'ocio-omega-threecol.png',
+  'category' => t('WCM Layouts'),
+  'theme' => 'ocio-omega-threecol',
+  'css' => 'ocio-omega-threecol.css',
+  'regions' => array(
+    'header' => t('Header'),
+    'column1' => t('First Column'),
+    'column2' => t('Second Column'),
+    'column3' => t('Third Column'),
+  ),
+);

profiles/wcm_base/themes/ocio_omega_base/panels/ocio-omega-threecol.tpl.php

+<?php
+/**
+ * @file
+ * Template for custom ocio-omega-threecol Panopoly layout.
+ *
+ * Variables:
+ * - $css_id: An optional CSS id to use for the layout.
+ * - $content: An array of content, each item in the array is keyed to one
+ * panel of the layout. This layout supports the following sections:
+ */
+?>
+
+<div class="panel-display ocio-omega-threecol clearfix <?php if (!empty($class)) { print $class; } ?>" <?php if (!empty($css_id)) { print "id=\"$css_id\""; } ?>>
+
+  <div class="ocio-omega-threecol-container ocio-omega-threecol-header clearfix panel-panel row-fluid">
+    <div class="ocio-omega-threecol-container-inner ocio-omega-threecol-header-inner panel-panel-inner span12">
+      <?php print $content['header']; ?>
+    </div>
+  </div>
+
+  <div class="ocio-omega-threecol-container ocio-omega-threecol-column-content clearfix row-fluid">
+    <div class="ocio-omega-threecol-column-content-region ocio-omega-threecol-column1 panel-panel span4">
+      <div class="ocio-omega-threecol-column-content-region-inner ocio-omega-threecol-column1-inner panel-panel-inner">
+        <?php print $content['column1']; ?>
+      </div>
+    </div>
+    <div class="ocio-omega-threecol-column-content-region ocio-omega-threecol-column2 panel-panel span4">
+      <div class="ocio-omega-threecol-column-content-region-inner ocio-omega-threecol-column2-inner panel-panel-inner">
+        <?php print $content['column2']; ?>
+      </div>
+    </div>
+    <div class="ocio-omega-threecol-column-content-region ocio-omega-threecol-column3 panel-panel span4">
+      <div class="ocio-omega-threecol-column-content-region-inner ocio-omega-threecol-column3-inner panel-panel-inner">
+        <?php print $content['column3']; ?>
+      </div>
+    </div>
+  </div>
+
+</div><!-- /.ocio-omega-threecol -->