if ($color)
         {
            $result = $db->query('SELECT id FROM '.$db->prefix.'posts WHERE color = \''.$color.'\'') or error('Unable to fetch color', __FILE__, __LINE__, $db->error());

             if ($db->num_rows($result))
             {
                 $color_results = array();
                 while ($row = $db->fetch_row($result))
                      $color_results[] = $row[0];
                 $db->free_result($result);
             }
             $search_ids = array_intersect($search_ids, $color_results);
             unset($color_results);
          }

/ If it's a search for posts by a specific color
            if ($color)
            {
                switch ($db_type)
                {
                    case 'pgsql':
                        $result = $db->query('SELECT id FROM '.$db->prefix.'posts WHERE color = \''.$color.'\'') or error('Unable to fetch color', __FILE__, __LINE__, $db->error());
                        break;

                    default:
                        $result = $db->query('SELECT id FROM '.$db->prefix.'posts WHERE color = \''.$color.'\'') or error('Unable to fetch color', __FILE__, __LINE__, $db->error());
                        break;
                }

                if ($db->num_rows($result))
                {

                    while ($row = $db->fetch_row($result))

                    $search_ids = array();
                    while ($row = $db->fetch_row($result))
                        $search_ids[] = $row[0];
                        //echo $search_ids;
                        //echo $row;
                    $db->free_result($result);

                }
            }