Change the color of a seekbar on onProgressChanged

Use this :

bar.setProgressDrawable(new ColorDrawable(Color.rgb( red, green, blue)));

Change the red,green,blue with progress change.

I do something like this using this method:

public void setProgressBarColor(ProgressBar progressBar, int newColor){ 
    LayerDrawable ld = (LayerDrawable) progressBar.getProgressDrawable();
    ClipDrawable d1 = (ClipDrawable) ld.findDrawableByLayerId(R.id.progressshape);
    d1.setColorFilter(newColor, PorterDuff.Mode.SRC_IN);

}

Then, when you update the progress, you just have to change the desired color.