colors.php

<?php
/**
 * Get color configs.
 *
 * @since 1.0.0
 *
 * @return array
 */
function bigbox_get_theme_colors() {
	return include get_template_directory() . '/app/customize/config/colors.php';
}

/**
 * Get a color.
 *
 * @since 1.0.0
 *
 * @param string $key Color key.
 * @return mixed String or false on no value.
 */
function bigbox_get_theme_color( $key ) {
	return get_theme_mod( "color-{$key}", bigbox_get_theme_default_color( $key ) );
}

/**
 * Get a default color.
 *
 * @since 1.0.0
 *
 * @param  string $key Color key.
 * @return mixed String or false on no default.
 */
function bigbox_get_theme_default_color( $key ) {
	$colors = bigbox_get_theme_colors();

	if ( isset( $colors[ $key ] ) ) {
		return $colors[ $key ]['color'];
	}

	return false;
}