(DOCSP-9656) Charts embedding SDK background option (#327)

* (DOCSP-9656) Charts embedding SDK background option

Author: zach-carr

conf.py

@@ -66,6 +66,7 @@
     '.. |aws| replace:: :abbr:`AWS (Amazon Web Services)`',
     '.. |gcp| replace:: :abbr:`GCP (Google Cloud Platform)`',
     '.. |html| replace:: :abbr:`HTML (HyperText Markup Language)`',
+    '.. |css| replace:: :abbr:`CSS (Cascading Style Sheets)`',
 ]
 
 rst_epilog.extend(get_replacements(conf))

source/embedding-charts-sdk.txt

@@ -210,7 +210,34 @@ of the chart by calling methods on its handle.
    * - ``theme``
      - string
      - A :ref:`theme <chart-display-theme>` for the chart to use. Valid
-       options are ``light`` and ``dark``. Defaults to ``light``.
+       options are:
+
+       - ``light`` for a light background with dark text and chart 
+         elements, or
+
+       - ``dark`` for a dark background with light text and chart 
+         elements.
+
+       Defaults to ``light``.
+     - no
+
+   * - ``background``
+     - string
+     - A background color to apply to your chart instead of the 
+       ``theme`` background. You can specify:
+
+       - A color hex code
+
+       - A |css| color name
+
+       - ``transparent`` for a transparent background
+
+       If no background is provided, the background color defaults to 
+       the current ``theme``:
+
+       - ``#FFFFFF`` for the ``light`` theme, or
+
+       - ``#21313C`` for the ``dark`` theme.
      - no
 
    * - ``showAttribution``