diff --git a/radicale/ical.py b/radicale/ical.py
index 94a42df..23e4def 100644
--- a/radicale/ical.py
+++ b/radicale/ical.py
@@ -437,6 +437,14 @@ class Collection(object):
         with self.props as props:
             return props.get("D:displayname", self.path.split(os.path.sep)[-1])
 
+    @property
+    def color(self):
+        """Collection color."""
+        with self.props as props:
+            if "A:calendar-color" not in props:
+                props["A:calendar-color"] = "#5ba209"
+            return props["A:calendar-color"]
+
     @property
     def headers(self):
         """Find headers items in collection."""
diff --git a/radicale/xmlutils.py b/radicale/xmlutils.py
index 72b826e..3127547 100644
--- a/radicale/xmlutils.py
+++ b/radicale/xmlutils.py
@@ -39,6 +39,7 @@ from . import client, config, ical
 
 
 NAMESPACES = {
+    "A": "http://apple.com/ns/ical/",
     "C": "urn:ietf:params:xml:ns:caldav",
     "CR": "urn:ietf:params:xml:ns:carddav",
     "D": "DAV:",
@@ -217,6 +218,7 @@ def propfind(path, xml_request, collections, user=None):
                  _tag("D", "displayname"),
                  _tag("D", "owner"),
                  _tag("D", "getetag"),
+                 _tag("A", "calendar-color"),
                  _tag("CS", "getctag")]
 
     # Writing answer
@@ -331,6 +333,8 @@ def _propfind_response(path, item, props, user):
                     item.tag, item.headers, item.timezones)
             elif tag == _tag("D", "displayname"):
                 element.text = item.name
+            elif tag == _tag("A", "calendar-color"):
+                element.text = item.color
             else:
                 human_tag = _tag_from_clark(tag)
                 if human_tag in collection_props: