wp-scss-customize-register.php

<?php
// Register settings and controls with the Customizer.
add_action( 'customize_register', 'seo_customizer_register' );
function seo_customizer_register() {

	global $wp_customize;
	global $seo_default_colors;

	// Loop through each variable in the array
	foreach($seo_default_colors as $key => $value) {
	  	
		// Add setting for each variable
		$wp_customize->add_setting( $key , array(
		    'default' => $value,
		    'sanitize_callback' => 'sanitize_hex_color',
		) );

		// Add control for each variable
		$wp_customize->add_control( 
			new WP_Customize_Color_Control( 
			$wp_customize, 
			$key, 
			array(
				'label'      => ucwords( str_replace( 'color-', '', $key ) ) . ' Color',
				'section'    => 'colors',
				'settings'   => $key,
			) ) 
		);
	}	
}