Index: stack_data-0.6.3/tests/test_core.py
===================================================================
--- stack_data-0.6.3.orig/tests/test_core.py
+++ stack_data-0.6.3/tests/test_core.py
@@ -573,8 +573,8 @@ def test_absolute_filename():
     [
         r".c { color: #(999999|ababab); font-style: italic }",
         r".err { color: #a61717; background-color: #e3d2d2 }",
-        r".c-ExecutingNode { color: #(999999|ababab); font-style: italic; background-color: #ffff00 }",
-        r".err-ExecutingNode { color: #a61717; background-color: #ffff00 }",
+        r".c-ExecutingNode { color: #(999999|ababab); font-style: italic; background-color: #(ffff00|FF0) }",
+        r".err-ExecutingNode { color: #A61717; background-color: #(ffff00|FF0) }",
     ]
 )
 def test_executing_style_defs(expected):
@@ -582,7 +582,7 @@ def test_executing_style_defs(expected):
     formatter = HtmlFormatter(style=style)
     style_defs = formatter.get_style_defs()
 
-    assert re.search(expected, style_defs)
+    assert re.search(expected, style_defs, re.IGNORECASE)
 
 
 def test_example():