diff --git a/prepare_tei.py b/prepare_tei.py
index a7e5a74..3e9d7e5 100644
--- a/prepare_tei.py
+++ b/prepare_tei.py
@@ -192,7 +192,7 @@ def cleanup_xml(xml_tree):
     # and, rename elements according to our schema
 
     metypeset_attrib = xml_tree.findall("//t:*[@meTypesetSize]", namespaces=NS_MAP)
-    color_attrib = xml_tree.xpath("//t:hi[contains(@rend, 'color')]", namespaces=NS_MAP)
+    color_attrib = xml_tree.xpath("//t:hi[contains(@rend, 'color') or contains(@rend, 'background')]", namespaces=NS_MAP)
 
     logging.info("Found %s metypesets." % len(metypeset_attrib))
     logging.info("Found %s colour attributes." % len(color_attrib))