change_icons.php

<?php
function jeo_change_js_image( $images ) {
	$images[ '/js/src/icons/news-marker' ][ 'url'] = JEO_BASEURL . '/js/src/icons/testeicon.png';
	$images[ '/js/src/icons/news-marker' ][ 'icon_size' ] = 0.3;

	$images[ '/js/src/icons/news' ][ 'url'] = JEO_BASEURL . '/js/src/icons/testnews.png';
	$images[ '/js/src/icons/news' ][ 'icon_size' ] = 0.25;
	$images[ '/js/src/icons/news' ][ 'text_color' ] = '#FFFFFF';


	return $images;
}

add_filter( 'jeomap_js_images', 'jeo_change_js_image', 10, 1 );

function jeo_change_js_cluster( $cluster ) {
	$cluster[ 'circle_color'] = '#523096';
	return $cluster;
}

add_filter( 'jeomap_js_cluster', 'jeo_change_js_cluster', 10, 1 );