Added $PS3 customization for 'modern' theme.
diff --git a/themes/modern/modern.theme.bash b/themes/modern/modern.theme.bash
index f0dbccc..6a58eef 100644
--- a/themes/modern/modern.theme.bash
+++ b/themes/modern/modern.theme.bash
@@ -7,6 +7,8 @@
 SCM_SVN_CHAR='${bold_cyan}⑆${normal}'
 SCM_HG_CHAR='${bold_red}☿${normal}'
 
+PS3=">> "
+
 modern_scm_prompt() {
 	CHAR=$(scm_char)
 	if [ $CHAR = $SCM_NONE_CHAR ]