Flash :: Change TLFTextField Link Style?

I've a assets swc file that contains several TLFTextField objects, each one with it's style (font, color, size).

I use the following code to set a link:

var text_tf : TLFTextField;
var url : String = "www.stackoverflow.com";
text_tf.htmlText = "<a href='http://" + url + "' target='_blank'>"+url+"</a>";

This works as expected, but it changes the color of the text to blue;

What's the easiest way to configure the color of the text, without having to recreate all the TLF mechanism (ContainerController, Configuration, TextLayoutFormat, TextFlow, ParagraphElement, LinkElement, SpanElement, ...);

I was expecting something like this to work:

text_tf.textFlow.linkNormalFormat = { color:0x00ffFF, textDecoration:TextDecoration.NONE };
text_tf.textFlow.linkHoverFormat = { color:0x00ffFF, textDecoration:TextDecoration.NONE };