I want a different logo on my homepage than subpages

Leave the large logo as the main uploaded logo and add this to your child theme’s functions.php:

add_filter( 'tc_logo_src' , 'my_smaller_logo_src' ) ;
function my_smaller_logo_src($logo_src) {
	if ( !is_front_page() ) {
		$logo_src = 'http://doehrmann.com/wordpress/wp-content/uploads/littlelogo1.png';
	}
	return $logo_src;
}

This tells Customizr to load the smaller logo if you are not on your front page.

This may not work with future versions of Customizr, as this code may be changed in future release. Check in here again before upgrading Customizr.