libgdx - Changing color and alpha of actor doesn't work in Scene2D -

changing color , alpha of actor doesn't work in scene2d; scaleto, moveby work though. can issue?

@override public void render(float alpha){      stage.act(delta);       table.settransform(true);      //works      table.addaction(actions.scaleto(2.3f, 2.5f, 2f)));      //does not work      table.addaction(actions.alpha(0.2f, 2f));      //does not work either      table.addaction(actions.color(new color(1f,1f,1f, 0.2f), 2f));       stage.draw(); } 

method render() called every time screen going rendered. code starts actions beginning every frame , nothing changes.

you should move these lines render() method other place (for example show() method of screen object):

 table.settransform(true);  //works  table.addaction(actions.scaleto(2.3f, 2.5f, 2f)));  //does not work  table.addaction(actions.alpha(0.2f, 2f));  //does not work either  table.addaction(actions.color(new color(1f,1f,1f, 0.2f), 2f));