Changing the Font Color of a Read-Only Field in MS CRM 2011

I recently got a request to change the font color of certain fields in CRM 2011. I used the below code to achieve this:

function setColor() {
    if (document.getElementById("new_name") != null) {
        //Add the below line if the field is disabled
        document.getElementById("new_name").disabled = false;
        //The below line changes the font color
        document.getElementById("new_name").style.color = "red";
    }
}

Note: Accessing the DOM as shown above is totally unsupported. I had to use the above method since I was not able to find any supported way of achieving this functionality