few heart icon questions !

add_action('after_setup_theme','kleo_my_hearts_actions');
 
function kleo_my_hearts_actions() 
{
   /* disable matching on member profile */
    remove_action('kleo_bp_before_profile_name', 'kleo_bp_compatibility_match');      
 
    /* Replace the heart over images */
    add_filter('kleo_img_rounded_icon', 'my_custom_icon');
 
    /* Replace the heart from register modal */
    add_filter('kleo_register_button_icon', 'my_custom_icon_register');
 
    /* Replace the heart from About us widget */
    add_filter('kleo_widget_aboutus_icon', 'my_custom_icon_about_widget');
}
 
/* Replace the heart with a camera icon function */
function my_custom_icon () {
    return 'camera';
}
 
/* Replace the heart from register modal with a user icon function */
function my_custom_icon_register () {
    return 'user';
}
/* Replace the heart from about us widget with a user icon function */
function my_custom_icon_about_widget () {
    return 'user';
}
 
add_action('after_setup_theme','kleo_remove_actions');
/**
 * Override existing actions
 * Use these functions to replace/remove existing actions
 * @since Sweetdate 1.3
*/ 
function kleo_remove_actions() 
{
   /* For example uncomment the line bellow to disable matching on member profile */
    remove_action('kleo_bp_before_profile_name', 'kleo_bp_compatibility_match');      
}