Try
$('.divLocal').each(function() {
var elem = $(this);
setInterval(function() {
if (elem.css('visibility') == 'hidden') {
elem.css('visibility', 'visible');
} else {
elem.css('visibility', 'hidden');
elem.css('color', 'red');
}
}, 500);
});
This will make the text flash. Just change the color randomly to give a multi-color effect.