Index: Gruntfile.js
===================================================================
--- Gruntfile.js	(revision 30594)
+++ Gruntfile.js	(working copy)
@@ -416,7 +416,10 @@
 				cwd: SOURCE_DIR,
 				src: [
 					'wp-{admin,includes}/images/**/*.{png,jpg,gif,jpeg}',
-					'wp-includes/js/tinymce/skins/wordpress/images/*.{png,jpg,gif,jpeg}'
+					'wp-includes/js/tinymce/skins/wordpress/images/*.{png,jpg,gif,jpeg}',
+					'wp-content/themes/twenty*/**/*.{png,jpg,gif,jpeg,svg}',
+					'!wp-content/themes/twenty*/screenshot.png',
+					'!wp-content/themes/twenty*/**/{Genericons.svg,genericons-regular-webfont.svg}'
 				],
 				dest: SOURCE_DIR
 			}