calendar small table.td background color per event category

<?php

/*
 * This custom calendar-small.php template will change the table td background according to Event Category color
 *
 * To use template:
 * - create these folders inside your theme directory - wp-content > themes > Your Theme > plugins > events-manager > template > calendar-small.php
 */


/*
 * This file contains the HTML generated for small calendars. You can copy this file to yourthemefolder/plugins/events/templates and modify it in an upgrade-safe manner.
 *
 * There are two variables made available to you:
 *
 * 	$calendar - contains an array of information regarding the calendar and is used to generate the content
 *  $args - the arguments passed to EM_Calendar::output()
 *
 * Note that leaving the class names for the previous/next links will keep the AJAX navigation working.
 */
?>
<table class="em-calendar">
	<thead>
		<tr>
			<td><a class="em-calnav em-calnav-prev" href="<?php echo $calendar['links']['previous_url']; ?>" rel="nofollow">&lt;&lt;</a></td>
			<td class="month_name" colspan="5"><?php echo ucfirst(date_i18n(get_option('dbem_small_calendar_month_format'), $calendar['month_start'])); ?></td>
			<td><a class="em-calnav em-calnav-next" href="<?php echo $calendar['links']['next_url']; ?>" rel="nofollow">&gt;&gt;</a></td>
		</tr>
	</thead>
	<tbody>
		<tr class="days-names">
			<td><?php echo implode('</td><td>',$calendar['row_headers']); ?></td>
		</tr>
		<tr>
			<?php
			$cal_count = count($calendar['cells']);
			$col_count = $count = 1; //this counts collumns in the $calendar_array['cells'] array
			$col_max = count($calendar['row_headers']); //each time this collumn number is reached, we create a new collumn, the number of cells should divide evenly by the number of row_headers
			foreach($calendar['cells'] as $date => $cell_data ){
				$class = ( !empty($cell_data['events']) && count($cell_data['events']) > 0 ) ? 'eventful':'eventless';
				if(!empty($cell_data['type'])){
					$class .= "-".$cell_data['type'];
				}
				?>

				<?php
					/*
					 * Get the events of the day and get the category color
					 */
				?>
				<?php if ( !empty($cell_data['events']) ) foreach( $cell_data['events'] as $EM_Event ): break; endforeach; ?>
				<?php $category_color = (!empty($cell_data['events'])) ? $EM_Event->output("#_CATEGORYCOLOR") : '' ; ?>

				<td class="<?php echo $class; ?>" <?php if ( !empty($category_color) ){ ?> style="background-color:<?php echo $category_color; ?>" <?php } ?> >
					<?php if( !empty($cell_data['events']) && count($cell_data['events']) > 0 ): ?>
					<a href="<?php echo esc_url($cell_data['link']); ?>"  title="<?php echo esc_attr($cell_data['link_title']); ?>"><?php echo date('j',$cell_data['date']); ?></a>
					<?php else:?>
					<?php echo date('j',$cell_data['date']); ?>
					<?php endif; ?>
				</td>
				<?php
				//create a new row once we reach the end of a table collumn
				$col_count= ($col_count == $col_max ) ? 1 : $col_count+1;
				echo ($col_count == 1 && $count < $cal_count) ? '</tr><tr>':'';
				$count ++;
			}
			?>
		</tr>
	</tbody>
</table>