WordPress: Change admin color scheme based on environment and user. Because I got tired of doing it manually when I re-cloned my local/staging db.

wordpress-change-admin-color-scheme-based-on-environment--functions.php

/**
 * Change admin color scheme for specific users based on the environment type. Overrides user selection.
 * Color scheme options: fresh, light, modern, blue, midnight, sunrise, ectoplasm, ocean, coffee
 */
add_filter(
	'admin_init',
	function () {
		$user_ids        = array( 1 ); // Array of user IDs
		$current_user_id = get_current_user_id();

		$environment_colors = array(
			'local'       => 'sunrise',
			'staging'     => 'ectoplasm',
			'development' => 'ocean',
			'production'  => 'fresh',
		);
		$environment_type   = wp_get_environment_type();

		// set the color scheme
		if ( in_array( $current_user_id, $user_ids, true ) ) :
			if ( array_key_exists( $environment_type, $environment_colors ) ) :
				$color = $environment_colors[ $environment_type ];
				update_user_option( $current_user_id, 'admin_color', $color );
			endif;
		endif;
	}
);