From 09595a50f507399bf3fa8c68ed6371c42b9c4874 Mon Sep 17 00:00:00 2001
From: Julian Berman <Julian@GrayVines.com>
Date: Fri, 21 Feb 2020 09:30:05 -0500
Subject: [PATCH 1/2] Newer webcolors has a new API apparently.

---
 jsonschema/_format.py | 2 +-
 setup.cfg             | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/jsonschema/_format.py b/jsonschema/_format.py
index 281a7cf..f3c758c 100644
--- a/jsonschema/_format.py
+++ b/jsonschema/_format.py
@@ -354,7 +354,7 @@ else:
     def is_css21_color(instance):
         if (
             not isinstance(instance, str_types) or
-            instance.lower() in webcolors.css21_names_to_hex
+            instance.lower() in webcolors.CSS21_NAMES_TO_HEX
         ):
             return True
         return is_css_color_code(instance)
-- 
2.24.1

From 0d192e192526252c30c16b3651c293bb5f21a99f Mon Sep 17 00:00:00 2001
From: Julian Berman <Julian@GrayVines.com>
Date: Fri, 21 Feb 2020 09:56:13 -0500
Subject: [PATCH 2/2] Sigh... but also drops Py2 compat.

---
 jsonschema/_format.py | 11 ++++++++---
 setup.cfg             |  4 ++--
 2 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/jsonschema/_format.py b/jsonschema/_format.py
index f3c758c..b96efb6 100644
--- a/jsonschema/_format.py
+++ b/jsonschema/_format.py
@@ -342,10 +342,15 @@ def is_draft3_time(instance):
     return datetime.datetime.strptime(instance, "%H:%M:%S")
 
 
-try:
+try:  # webcolors>=1.11
+    from webcolors import CSS21_NAMES_TO_HEX
     import webcolors
 except ImportError:
-    pass
+    try:  # webcolors<1.11
+        from webcolors import css21_names_to_hex as CSS21_NAMES_TO_HEX
+        import webcolors
+    except ImportError:
+        pass
 else:
     def is_css_color_code(instance):
         return webcolors.normalize_hex(instance)
@@ -354,7 +359,7 @@ else:
     def is_css21_color(instance):
         if (
             not isinstance(instance, str_types) or
-            instance.lower() in webcolors.CSS21_NAMES_TO_HEX
+            instance.lower() in CSS21_NAMES_TO_HEX
         ):
             return True
         return is_css_color_code(instance)
-- 
2.24.1