When I clear the background color, it don't show the wave

[itsaboutcode]

When I set the background color of EZAudioPlotGL, it stop showing the wave (which is in white color).

    @IBOutlet weak var plot: EZAudioPlotGL?

    self.plot!.backgroundColor = UIColor.clearColor()
    self.plot!.opaque = false

[ciso]

For me it worked...

        self.audioPlot.backgroundColor = UIColor.clearColor()
        self.audioPlot.color = UIColor.fromRGB(0xfafafa)

[akac]

I've seen this happen as well randomly.