wpmu-authors

<?php
function wpmu_customize_register( $wp_customize ) {
}
add_action( 'customize_register', 'wpmu_customize_register' );

wpmu-authors

/*******************************************
Section
********************************************/
	
// colors section
$wp_customize->add_section( 'wpmu_colors' , array(
	'title' => __( 'Colors', 'wpmu')
) );

wpmu-authors

/*******************************************
Color settings
********************************************/

//logo position
$wp_customize->add_setting( 'wpmu_nav_color' );
$wp_customize->add_control( 'wpmu_nav_color', array (
	'label' => 'Navigation Menu Color',
	'section' => 'wpmu_colors',
	'settings' => 'wpmu_header_color',

wpmu-authors

<nav class="main">
	<?php wp_nav_menu( array(
		'theme_location' => 'header-menu',
		'container_class' => 'menu'
	) ); ?>
</nav>

wpmu-authors

<nav class="main <?php echo apply_filters( 'wpmu_header_color_css', 'blue' ); ?>">
	<?php wp_nav_menu( array(
		'theme_location' => 'header-menu',
		'container_class' => 'menu'
	) ); ?>
</nav>

wpmu-authors

function wpmu_header_color( $header_color ) {

	$header_color = get_theme_mod( 'wpmu_header_color', 'blue' );
	
	return $header_color;
		
}
add_filter( 'wpmu_header_color_css' , 'wpmu_header_color' );

wpmu-authors

nav.main.blue
nav.main.blue a {
	background: #312d72;
}
nav.main.red,
nav.main.red a {
	background: #8b1b1b;
}
nav.main.green,
nav.main.green a {

wpmu-authors

<div class="updated notice">
    <p>Something has been updated, awesome</p>
</div>
<div class="error notice">
    <p>There has been an error. Bummer</p>
</div>
<div class="update-nag notice">
    <p>You should really update to achieve some awesome instad of bummer</p>
</div>

wpmu-authors

function my_error_notice() {
    ?>
    <div class="error notice">
        <p><?php _e( 'There has been an error. Bummer!', 'my_plugin_textdomain' ); ?></p>
    </div>
    <?php
}
add_action( 'admin_notices', 'my_error_notice' );

wpmu-authors

function my_error_notice() {
    ?>
    <div class="error notice">
        <p><?php _e( 'There has been an error. Bummer!', 'my_plugin_textdomain' ); ?></p>
    </div>
    <?php
}
add_action( 'admin_notices', 'my_error_notice' );

function my_update_notice() {