Change te color of a class

If you look at the footer.php you can add anything you like in there.

How can I change the color of ‘return to top’ then? (Can it also be done with CSS)? This is the code:

<div class="footer-menu-wrap">
    	<ul id="footer-menu" class="clearfix">
			<?php /* Footer menu */
            $args = array(
                'container' => '',
                'fallback_cb' => 'none',
                'depth' => 2,
                'theme_location' => 'footer-menu',
                'items_wrap' => '%3$s'
            );
            wp_nav_menu(apply_filters('graphene_secondary_menu_args', $args));
            ?>
            <?php if ( ! $graphene_settings['hide_return_top'] ) : ?>
        	<li class="menu-item return-top"><a href="#"><?php _e('Return to top', 'graphene'); ?></a></li>
            <?php endif; ?>
        </ul>
    </div>

first idea would be:
.return-top a { color: #123edf; }

however, there are quite a few more specific rules than .return-top a – therefore:

#footer .footer-menu-wrap .return-top a { color: #123edf; }

add this to style.css of your theme.

Thanks! It works perfectly! This was exactly the advice needed! ??