On a php generated page there are several elements like this:

<td class="defaultTDStyle" style="color:userDefinedCustomColor" id="myTDId"></td>

So there is a default style and I apply several extra styles that override the style defined in the CSS.

Is there a way to remove these added styles from javascript?
It seems the obj.style.color="default" and obj.style.color="auto" don't work. How can I reset the color to the CSS default from javascript?