proframework/gist:70fbf836b4254175429e

## gistfile1.php
<?php
/**
 * Generate the CSS in the <head> section using the Theme Customizer
 * @since 0.1
 */
add_action('generate_head_css','generate_your_css');
if ( !function_exists( 'generate_your_css' ) ) :
	function generate_advanced_css()
	{
		$your_option = get_option( 'your_saved_db_entry' );
		$space = ' ';

		// Start the magic
		$your_css = array (

			// Header
			'.site-header' => array(
				'background' => $your_option['header_background_color'],
				'color' => $your_option['header_text_color']
			),

			'.some-element' => array(
				'background-image' => YOUR VALUE
			)

		);

		// Output the above CSS
		$output = '';
		foreach($your_css as $k => $properties) {
			if(!count($properties))
				continue;

			$temporary_output = $k . ' {';
			$elements_added = 0;

			foreach($properties as $p => $v) {
				if(empty($v))
					continue;

				$elements_added++;
				$temporary_output .= $p . ': ' . $v . '; ';
			}

			$temporary_output .= "}";

			if($elements_added > 0)
				$output .= $temporary_output;
		}

		$output = str_replace(array("\r", "\n"), '', $output);
		echo $output;
	}
endif;
	<?php
	/**
	* Generate the CSS in the <head> section using the Theme Customizer
	* @since 0.1
	*/
	add_action('generate_head_css','generate_your_css');
	if ( !function_exists( 'generate_your_css' ) ) :
	function generate_advanced_css()
	{
	$your_option = get_option( 'your_saved_db_entry' );
	$space = ' ';

	// Start the magic
	$your_css = array (

	// Header
	'.site-header' => array(
	'background' => $your_option['header_background_color'],
	'color' => $your_option['header_text_color']
	),

	'.some-element' => array(
	'background-image' => YOUR VALUE
	)

	);

	// Output the above CSS
	$output = '';
	foreach($your_css as $k => $properties) {
	if(!count($properties))
	continue;

	$temporary_output = $k . ' {';
	$elements_added = 0;

	foreach($properties as $p => $v) {
	if(empty($v))
	continue;

	$elements_added++;
	$temporary_output .= $p . ': ' . $v . '; ';
	}

	$temporary_output .= "}";

	if($elements_added > 0)
	$output .= $temporary_output;
	}

	$output = str_replace(array("\r", "\n"), '', $output);
	echo $output;
	}
	endif;