diff --git a/packages/python/plotly/_plotly_utils/colors/__init__.py b/packages/python/plotly/_plotly_utils/colors/__init__.py
index 2f344de3eaf..b7669ce4d21 100644
--- a/packages/python/plotly/_plotly_utils/colors/__init__.py
+++ b/packages/python/plotly/_plotly_utils/colors/__init__.py
@@ -797,3 +797,12 @@ def convert_colorscale_to_rgb(colorscale):
     for color in colorscale:
         color[1] = label_rgb(color[1])
     return colorscale
+
+
+def named_colorscales():
+    """
+    Returns lowercased names of built-in continuous colorscales.
+    """
+    from _plotly_utils.basevalidators import ColorscaleValidator
+
+    return [c for c in ColorscaleValidator("", "").named_colorscales]
diff --git a/packages/python/plotly/_plotly_utils/colors/_swatches.py b/packages/python/plotly/_plotly_utils/colors/_swatches.py
index ff07ff42907..9609249036b 100644
--- a/packages/python/plotly/_plotly_utils/colors/_swatches.py
+++ b/packages/python/plotly/_plotly_utils/colors/_swatches.py
@@ -1,10 +1,21 @@
-def _swatches(module_names, module_contents):
+def _swatches(module_names, module_contents, template=None):
     """
-    Returns:
+    Parameters
+    ----------
+    template : str or dict or plotly.graph_objects.layout.Template instance
+        The figure template name or definition.
+
+    Returns
+    -------
+    fig : graph_objects.Figure containing the displayed image
         A `Figure` object. This figure demonstrates the color scales and
         sequences in this module, as stacked bar charts.
     """
     import plotly.graph_objs as go
+    from plotly.express._core import apply_default_cascade
+
+    args = dict(template=template)
+    apply_default_cascade(args)
 
     sequences = [
         (k, v)
@@ -25,13 +36,13 @@ def _swatches(module_names, module_contents):
             for name, colors in reversed(sequences)
         ],
         layout=dict(
-            title=module_names,
+            title="plotly.colors." + module_names.split(".")[-1],
             barmode="stack",
             barnorm="fraction",
-            template="plotly",
             bargap=0.5,
             showlegend=False,
             xaxis=dict(range=[-0.02, 1.02], showticklabels=False, showgrid=False),
             height=max(600, 40 * len(sequences)),
+            template=args["template"],
         ),
     )
diff --git a/packages/python/plotly/_plotly_utils/colors/carto.py b/packages/python/plotly/_plotly_utils/colors/carto.py
index c20d6b5d259..94b3785d5ed 100644
--- a/packages/python/plotly/_plotly_utils/colors/carto.py
+++ b/packages/python/plotly/_plotly_utils/colors/carto.py
@@ -9,8 +9,8 @@
 from ._swatches import _swatches
 
 
-def swatches():
-    return _swatches(__name__, globals())
+def swatches(template=None):
+    return _swatches(__name__, globals(), template)
 
 
 swatches.__doc__ = _swatches.__doc__
diff --git a/packages/python/plotly/_plotly_utils/colors/cmocean.py b/packages/python/plotly/_plotly_utils/colors/cmocean.py
index c7174fd60c0..029e4204428 100644
--- a/packages/python/plotly/_plotly_utils/colors/cmocean.py
+++ b/packages/python/plotly/_plotly_utils/colors/cmocean.py
@@ -9,8 +9,8 @@
 from ._swatches import _swatches
 
 
-def swatches():
-    return _swatches(__name__, globals())
+def swatches(template=None):
+    return _swatches(__name__, globals(), template)
 
 
 swatches.__doc__ = _swatches.__doc__
diff --git a/packages/python/plotly/_plotly_utils/colors/colorbrewer.py b/packages/python/plotly/_plotly_utils/colors/colorbrewer.py
index fa2e2b9a981..b21015ec615 100644
--- a/packages/python/plotly/_plotly_utils/colors/colorbrewer.py
+++ b/packages/python/plotly/_plotly_utils/colors/colorbrewer.py
@@ -9,8 +9,8 @@
 from ._swatches import _swatches
 
 
-def swatches():
-    return _swatches(__name__, globals())
+def swatches(template=None):
+    return _swatches(__name__, globals(), template)
 
 
 swatches.__doc__ = _swatches.__doc__
diff --git a/packages/python/plotly/_plotly_utils/colors/cyclical.py b/packages/python/plotly/_plotly_utils/colors/cyclical.py
index ec024865df6..235aee95fe0 100644
--- a/packages/python/plotly/_plotly_utils/colors/cyclical.py
+++ b/packages/python/plotly/_plotly_utils/colors/cyclical.py
@@ -7,8 +7,8 @@
 from ._swatches import _swatches
 
 
-def swatches():
-    return _swatches(__name__, globals())
+def swatches(template=None):
+    return _swatches(__name__, globals(), template)
 
 
 swatches.__doc__ = _swatches.__doc__
diff --git a/packages/python/plotly/_plotly_utils/colors/diverging.py b/packages/python/plotly/_plotly_utils/colors/diverging.py
index 0a1bf21db6e..eb6ca140da8 100644
--- a/packages/python/plotly/_plotly_utils/colors/diverging.py
+++ b/packages/python/plotly/_plotly_utils/colors/diverging.py
@@ -25,8 +25,8 @@
 from ._swatches import _swatches
 
 
-def swatches():
-    return _swatches(__name__, globals())
+def swatches(template=None):
+    return _swatches(__name__, globals(), template)
 
 
 swatches.__doc__ = _swatches.__doc__
diff --git a/packages/python/plotly/_plotly_utils/colors/qualitative.py b/packages/python/plotly/_plotly_utils/colors/qualitative.py
index 9984cc4b049..41fa555ed10 100644
--- a/packages/python/plotly/_plotly_utils/colors/qualitative.py
+++ b/packages/python/plotly/_plotly_utils/colors/qualitative.py
@@ -7,8 +7,8 @@
 from ._swatches import _swatches
 
 
-def swatches():
-    return _swatches(__name__, globals())
+def swatches(template=None):
+    return _swatches(__name__, globals(), template)
 
 
 swatches.__doc__ = _swatches.__doc__
diff --git a/packages/python/plotly/_plotly_utils/colors/sequential.py b/packages/python/plotly/_plotly_utils/colors/sequential.py
index 4b418dd8fa3..42fea40cd22 100644
--- a/packages/python/plotly/_plotly_utils/colors/sequential.py
+++ b/packages/python/plotly/_plotly_utils/colors/sequential.py
@@ -8,8 +8,8 @@
 from ._swatches import _swatches
 
 
-def swatches():
-    return _swatches(__name__, globals())
+def swatches(template=None):
+    return _swatches(__name__, globals(), template)
 
 
 swatches.__doc__ = _swatches.__doc__