The plug in WP-Copyright-Protection might be able to at least prevent your art work from being copied. As for the theme that I can not answer.
<div id="pjgm-bigtitle">
<?php $pjgm_tag = ( is_home() || is_front_page() ) ? 'h1' : 'div'; ?>
<<?php echo $pjgm_tag; ?> id="pjgm-title">
<span>
<a href="<?php echo home_url( '/' ); ?>" title="<?php echo esc_attr( get_bloginfo( 'name', 'display' ) ); ?>" rel="home"><?php bloginfo( 'name' ); ?></a>
</span>
</<?php echo $pjgm_tag; ?>>
