No, I’d like to change the labels throughout. Not having them changed on the back-end would confuse what the fields are supposed to be filled with on the Edit Person Post-type page.
Also, I’ve tried changing them on the front-end without luck.
Language File addition:
#. Originally "height" #. Text in echo #: single-person.php:66 msgid "style" msgstr ""
Line 66 in single-person.php:
<p class='sllist_3'><?php echo sl_post_meta('height', '<span>'.__('Height','sevenleague').':</span><em>','</em>'); ?></p>
Making that addition to the language file did not change “height” to “style” on the single person page.