White contentheading lost when transferring to pay

Hi, my site uses white contentheadings so when a donation form is submitted all of the "please wait while we transfer you to paypal to complete...etc" text is lost on the white background of my page.

Is there a way to call the componentheading instead? or make it just plain text?
I thought this was the code to change but nothing happened when i changed it... any ideas?

<div class="contentheading"><?php echo JText::_('OS_WAIT_PAYPAL'); ?></div>

any advice?