Multiple Alpha

var config = {
    type: Phaser.WEBGL,
    parent: 'phaser-example',
    width: 800,
    height: 600,
    scene: {
        preload: preload,
        create: create
    }
};

var game = new Phaser.Game(config);

function preload ()
{
        this.load.setBaseURL('https://cdn.phaserfiles.com/v355');
    this.load.image('pixel', 'assets/sprites/16x16.png');
}

function create ()
{
    var image1 = this.add.image(300, 300, 'pixel').setAlpha(1);
    var image2 = this.add.image(400, 300, 'pixel').setAlpha(0.75);
    var image3 = this.add.image(500, 300, 'pixel').setAlpha(0.5);

    console.log(image1.alpha);
    console.log(image2.alpha);
    console.log(image3.alpha);
}