rainbows.init({
	selector: '.sombra',
	highlight: true,
	shadow: true,
	from: '#aaaaaa',
	to: '#ffffff'
});
rainbows.init({
	selector: '.sombra2',
	highlight: false,
	shadow: true,
	from: '#FF4628',
	to: '#FF836C'
});
rainbows.init({
	selector: '.sombra3',
	highlight: true,
	shadow: false,
	from: '#FF7059',
	to: '#FF7059'
});