How can I change the font color on a pageItem?

Hello,

This is probably an easy one...

I'm looking to change the font color of a pageItem to black, if it's value exceeds a specific value.

I'm reading the value of the item from an xml file ::

var avgScore = (xmlImport.average.delivery);

And then assigning the value to the pageItem which is a text layer called "delivery_score"::

tempLayers.getByName("average_bar").pageItems["delivery_score"].contents = avgScore;

What I would love to do is change the font color to black...  I'm not clear how to do this...

I'm not having any luck with text range.

tempLayers.getByName("average_bar").pageItems["delivery_score"].textRange.fillColor =

Any advise?

Thanks!