Change label color from in checkout login table

<div id="hikashop_checkout_page" class="hikashop_checkout_page">
<form action="/tempweb/component/hikashop/checkout/step/step-1" method="post" name="hikashop_checkout_form" enctype="multipart/form-data">
<h1>Please enter your contact info</h1>
<div id="hikashop_checkout_login" class="hikashop_checkout_login">	
<div  id="hikashop_checkout_login_right_part" class="hikashop_checkout_login_right_part">
<fieldset class="input">
<h2>Email</h2><table cellpadding="0" cellspacing="0" border="0" class="hikashop_contentpane">
<tr class="hikashop_registration_email_line">
	<td class="key">
		<label id="emailmsg" for="register_email">
			E-mail		</label>
	</td>
	<td>
		<input type="text" id="register_email" name="data[register][email]" value="" class="inputbox required validate-email" maxlength="100" /> *
	</td>
</tr>
	<tr class="hikashop_registration_email_confirm_line">
		<td class="key">
			<label id="email_confirm_msg" for="register_email_confirm">
				E-mail confirmation			</label>
		</td>
		<td>
			<input type="text" id="register_email_confirm" name="data[register][email_confirm]" value="" class="inputbox required validate-email" maxlength="100" onchange="if(this.value!=document.getElementById('register_email').value){alert('The confirmation email differs from the email your entered. Please enter it again.'); this.value = '';}" /> *
		</td>
	</tr>
	<tr class="hikashop_registration_address_info_line">
	<td colspan="2" height="40">
		Address information	</td>
</tr>
		<tr class="hikashop_registration_address_title_line" id="hikashop_address_address_title">
			<td class="key">
				<label for="address_title">Title</label>			</td>
			<td>
				<select id="address_title" name="data[address][address_title]" size="1" onchange="hikashopToggleFields(this.value,'address_title','address',0);"><option value="Mr" id="address_title_Mr" selected="selected" >Mr</option><option value="Mrs" id="address_title_Mrs" >Mrs</option><option value="Miss" id="address_title_Miss" >Miss</option><option value="Ms" id="address_title_Ms" >Ms</option><option value="Dr" id="address_title_Dr" >Dr</option></select> <span class="hikashop_field_required">*</span>			</td>
		</tr>
			<tr class="hikashop_registration_address_firstname_line" id="hikashop_address_address_firstname">
			<td class="key">
				<label for="address_firstname">First name</label>			</td>