diff --git a/python/damask/_colormap.py b/python/damask/_colormap.py
index 8bcb076d4..5c0ca11d3 100644
--- a/python/damask/_colormap.py
+++ b/python/damask/_colormap.py
@@ -186,7 +186,7 @@ class Colormap(mpl.colors.ListedColormap):
                np.logical_or (np.isnan(field), field == gap))                                       # mask gap and NaN (if gap present)
 
         if bounds is None:
-            hi,lo = field[mask].min(),field[mask].max()
+            hi,lo = field[mask].max(),field[mask].min()
         else:
             hi,lo = bounds[::-1]
         
diff --git a/python/tests/reference/Colormap/shade.png b/python/tests/reference/Colormap/shade.png
deleted file mode 100644
index a9e5eacea..000000000
Binary files a/python/tests/reference/Colormap/shade.png and /dev/null differ
diff --git a/python/tests/reference/Colormap/shade_None.png b/python/tests/reference/Colormap/shade_None.png
new file mode 100644
index 000000000..2289910ae
Binary files /dev/null and b/python/tests/reference/Colormap/shade_None.png differ
diff --git a/python/tests/reference/Colormap/shade_[2, 10].png b/python/tests/reference/Colormap/shade_[2, 10].png
new file mode 100644
index 000000000..25c1cebb8
Binary files /dev/null and b/python/tests/reference/Colormap/shade_[2, 10].png differ
diff --git a/python/tests/test_Colormap.py b/python/tests/test_Colormap.py
index 8eebf63ee..b3309f12b 100644
--- a/python/tests/test_Colormap.py
+++ b/python/tests/test_Colormap.py
@@ -131,13 +131,14 @@ class TestColormap:
         c += c
         assert (np.allclose(c.colors[:len(c.colors)//2],c.colors[len(c.colors)//2:]))
 
-    def test_shade(self,reference_dir,update):
+    @pytest.mark.parametrize('bounds',[None,[2,10]])
+    def test_shade(self,reference_dir,update,bounds):
         data = np.add(*np.indices((10, 11)))
-        img_current = Colormap.from_predefined('orientation').shade(data)
+        img_current = Colormap.from_predefined('orientation').shade(data,bounds=bounds)
         if update:
-            img_current.save(reference_dir/'shade.png')
+            img_current.save(reference_dir/f'shade_{bounds}.png')
         else:
-            img_reference = Image.open(reference_dir/'shade.png')
+            img_reference = Image.open(reference_dir/f'shade_{bounds}.png')
             diff = ImageChops.difference(img_reference.convert('RGB'),img_current.convert('RGB'))
             assert not diff.getbbox()