diff --git a/lib/mpl_toolkits/mplot3d/art3d.py b/lib/mpl_toolkits/mplot3d/art3d.py
index e936f4f28577..05ef1e9ddac8 100644
--- a/lib/mpl_toolkits/mplot3d/art3d.py
+++ b/lib/mpl_toolkits/mplot3d/art3d.py
@@ -809,7 +809,7 @@ def _zalpha(colors, zs):
# in all three dimensions. Otherwise, at certain orientations,
# the min and max zs are very close together.
# Should really normalize against the viewing depth.
- if len(zs) == 0:
+ if len(colors) == 0 or len(zs) == 0:
return np.zeros((0, 4))
norm = Normalize(min(zs), max(zs))
sats = 1 - norm(zs) * 0.7
diff --git a/lib/mpl_toolkits/tests/test_mplot3d.py b/lib/mpl_toolkits/tests/test_mplot3d.py
index b68c250496ed..0c85991ebe4b 100644
--- a/lib/mpl_toolkits/tests/test_mplot3d.py
+++ b/lib/mpl_toolkits/tests/test_mplot3d.py
@@ -237,8 +237,14 @@ def test_scatter3d():
def test_scatter3d_color():
fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')
+
+ # Check that 'none' color works; these two should overlay to produce the
+ # same as setting just `color`.
+ ax.scatter(np.arange(10), np.arange(10), np.arange(10),
+ facecolor='r', edgecolor='none', marker='o')
ax.scatter(np.arange(10), np.arange(10), np.arange(10),
- color='r', marker='o')
+ facecolor='none', edgecolor='r', marker='o')
+
ax.scatter(np.arange(10, 20), np.arange(10, 20), np.arange(10, 20),
color='b', marker='s')
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