Hmmm, a different way to output you say?
<?php if ( 'en_US' === get_locale() ) : ?>
Wasn't your favorite color red?
<?php endif; ?>
But seriously, I mean anything can be done if you want to do it. If you look at esc_html__ - you will see that it's just calling esc_html, which is filterable after the safe text has been ...
It is not recommended to edit the theme file directly. It is best practice to use some sort of plugin.
Monster Insight is one of the best available in the market. It is available in the WordPress repository.