I would like the terms and conditions checkbox and line to stand out a little better. Is there a way to change just that one lines colour ?

define('TEXT_CONDITIONS_CONFIRM', '<span class="termsiagree">I have read and agreed to the terms and conditions bound to this order.</span>');

Should I put some HTML here ? .. or should it be done in the CSS ?

I am pretty new at this .. so if you could show me too that would be great