You can adjust it to use an OR operator by something like:
<?php if( have_rows('resources') ): while( have_rows('resources') ) : the_row();
$colors = get_sub_field('show_for');
if( !empty($colors) && ( in_array('usersme', $colors) || in_array('other_value', $colors) ) { ?>
TEST
<?php } endwhile; endif; ?>