How to colorize AFrames

Hi,

I am trying the automatic processing below.

• Add borders to Aframes
• Colorize Aframes

Before:

After:

Adding borders succeeded, but I can't add colors to AFrames.

My script is below.

var doc = app.ActiveDoc;
if (doc.ObjectValid() == true) {
  var colorFormat = doc.GetNamedObject(Constants.FO_Color, "Red");
  var colorProps = colorFormat.GetProps(); 
  
  var flow = doc.MainFlowInDoc;
  var textFrame = flow.FirstTextFrameInFlow;
  while (textFrame.ObjectValid()) {
    var aFrame = textFrame.FirstAFrame;
    while (aFrame.ObjectValid()) {
      aFrame.Pen = 0;  //=> works!
      
      aFrame.Color.SetProps(colorProps); //=> doesn't work...
      aFrame.SetProps(colorProps); //=> doesn't work...
      aFrame.Color.Name = "Red";  //=> doesn't work...
      aFrame = aFrame.NextAFrame;
    }
    textFrame = textFrame.NextTextFrameInFlow;
  }
}

Please teach me how to handle it.

Thanks,

Koji Koike