/**
* generates random colors for the ProgressBar
*/
protected void SwitchColor()
{
Random r = new Random();
int randomColor = Color.Rgb(r.Next(256), r.Next(256), r.Next(256));
holoCircularProgressBar.SetProgressColor(randomColor);
randomColor = Color.Rgb(r.Next(256), r.Next(256), r.Next(256));
holoCircularProgressBar.SetProgressBackgroundColor(randomColor);
}
