FacetWP - custom snazzy map design

functions.php

<?php

add_filter( 'facetwp_map_init_args', function( $settings ) {
    $styles = '[{"featureType":"water","elementType":"geometry","stylers":[{"color":"#193341"}]},{"featureType":"landscape","elementType":"geometry","stylers":[{"color":"#2c5a71"}]},{"featureType":"road","elementType":"geometry","stylers":[{"color":"#29768a"},{"lightness":-37}]},{"featureType":"poi","elementType":"geometry","stylers":[{"color":"#406d80"}]},{"featureType":"transit","elementType":"geometry","stylers":[{"color":"#406d80"}]},{"elementType":"labels.text.stroke","stylers":[{"visibility":"on"},{"color":"#3e606f"},{"weight":2},{"gamma":0.84}]},{"elementType":"labels.text.fill","stylers":[{"color":"#ffffff"}]},{"featureType":"administrative","elementType":"geometry","stylers":[{"weight":0.6},{"color":"#1a3541"}]},{"elementType":"labels.icon","stylers":[{"visibility":"off"}]},{"featureType":"poi.park","elementType":"geometry","stylers":[{"color":"#2c5a71"}]}]';
    $settings['init']['styles'] = json_decode( $styles );
    return $settings;
});