stream.py: BBB_BACKGROUND_COLOR

Override the default background color within the stream.

README.md

@@ -35,6 +35,7 @@ You need to set some environment variables to run the container.
 * BBB_CHAT_MESSAGE - prefix for the message that would be posted to BBB chat, while joining a conference (Default: "This meeting is streamed to")
 * BBB_HIDE_MEETING_TITLE - hide the meeting title in the top bar (Default: false)
 * BBB_HIDE_WHO_TALKS - hide the annotation who is currently talking (Default: false)
+* BBB_BACKGROUND_COLOR - override background color by a CSS color, e.g., "black" or "#ffffff"
 * TZ - Timezone (Default: Europe/Vienna)
 
 #### Chat settings

stream.py

@@ -85,6 +85,11 @@
     help='hide the annotation who is currently talking (can be set using env)',
     default=bool(strtobool(os.environ.get('BBB_HIDE_WHO_TALKS', '0')))
 )
+parser.add_argument(
+    '--bbb-background-color',
+    help='override background color by a CSS color, e.g., "black" or "#ffffff" (can be set using env)',
+    default=os.environ.get('BBB_BACKGROUND_COLOR', '')
+)
 
 args = parser.parse_args()
 # some ugly hacks for additional options
@@ -240,6 +245,9 @@ def bbb_browser():
     except JavascriptException:
         browser.execute_script("document.getElementById('app').setAttribute('style','margin-bottom:30px');")
 
+    if args.bbb_background_color:
+        browser.execute_script("document.querySelector('body').setAttribute('style','background-color: %s;');" % args.bbb_background_color)
+
 def create_meeting():
     create_params = {}
     if args.moderatorPassword: