Make states fill_color="none" (transparent) (#643)

Co-authored-by: Simon Høxbro Hansen <simon.hansen@me.com>

CHANGELOG.md

@@ -8,10 +8,13 @@ This release adds Bokeh 3 support to Geoviews, along with bug fixes and enhancem
 
 This release also deprecates the `Wikipedia` tile source. If you are using this tile source, please switch to the `OSM` tile source instead. The `Wikipedia` tile source will be removed in version 1.11.0. `geoviews.util.load_tiff` has also been deprecated `rioxarray.open_rasterio` to load GeoTIFFs into a `xarray.DataArray`.
 
+Note, this release has a minor breaking change where `gv.feature.states` defaults to `fill_color=None` so the fill color is transparent.
+
 Enhancements:
 
 - Add Bokeh 3 support to GeoViews ([#625](https://github.com/holoviz/geoviews/pull/625))
 - Add `PandasAPI` to `GeoPandasInterface` ([#620](https://github.com/holoviz/geoviews/pull/620))
+- Updated the default for `gv.feature.states` to `fill_color=None` ([#643](https://github.com/holoviz/geoviews/pull/643))
 
 Bug fixes:
 

doc/releases.rst

@@ -7,7 +7,7 @@ Version 1.10.0
 Date: May 24, 2023
 
 This release adds Bokeh 3 support to Geoviews, along with bug fixes and
-enhancements. Many thanks to @maximlt, @philippjfr, and @Hoxbro.
+enhancements. Many thanks to @maximlt, @philippjfr, @Hoxbro, and @ahuang11.
 
 This release also deprecates the ``Wikipedia`` tile source. If you are
 using this tile source, please switch to the ``OSM`` tile source
@@ -16,12 +16,17 @@ instead. The ``Wikipedia`` tile source will be removed in version
 ``rioxarray.open_rasterio`` to load GeoTIFFs into a
 ``xarray.DataArray``.
 
+Note, this release has a minor breaking change where `gv.feature.states`
+defaults to `fill_color=None` so the fill color is transparent.
+
 Enhancements:
 
 -  Add Bokeh 3 support to GeoViews
    (`#625 <https://github.com/holoviz/geoviews/pull/625>`__)
 -  Add ``PandasAPI`` to ``GeoPandasInterface``
    (`#620 <https://github.com/holoviz/geoviews/pull/620>`__)
+-  Updated the default for ``gv.feature.states`` to ``fill_color=None``
+   (`#643 <https://github.com/holoviz/geoviews/pull/643>`__)
 
 Bug fixes:
 

geoviews/plotting/bokeh/__init__.py

@@ -307,4 +307,5 @@ def _process(self, element, key=None):
 options.Feature.Lakes  = Options('style', fill_color='#97b6e1', line_color='#97b6e1')
 options.Feature.Rivers = Options('style', line_color='#97b6e1')
 options.Feature.Grid = Options('style', line_width=0.5, alpha=0.5, line_color='gray')
+options.Feature.States = Options('style', fill_color=None)
 options.Shape = Options('style', line_color='black', fill_color='#30A2DA')