         // positions it with respect to bottom left
 
         node.position = CGPoint(x: x, y: 0)
-        x += WidthOfScreen / 3
+        x += screenWidth / 3
 
         node.name = "noteButton"
 
-        if x == WidthOfScreen / 3 {
+        if x == screenWidth / 3 {
             // set button to 1 value
             node.name = node.name! + " 1"
-
-        } else if (x > (WidthOfScreen / 2) && x < (3 * WidthOfScreen / 4)) {
+        } else if (x > (screenWidth / 2) && x < (3 * screenWidth / 4)) {
             // set button to 2 value
             node.name = node.name! + " 2"
-
         } else {
             // set button to 3 value
             node.name = node.name! + " 3"

    }

    override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
            // when user touches a button, turn it light blue

        for touch in touches {
            let location = touch.locationInNode(self)

        green = SKColor.greenColor(),
        purple = SKColor.purpleColor()

    var buttonOneActive = 0,
        buttonTwoActive = 0,
        buttonThreeActive = 0

    // minimalist colors!
    let minimalLightBlue = SKColor(rgba: "#3498db"),
