Widgets on black backgrounds look ugly...

See attached screenshot as an example - I'd definitely prefer

• a white lock icon,
  
• a battery icon with black and white exchanged, and
  
• a version display with white text on black background
  
  

Keep in mind that, e.g., the lock icon can only be recognized because I still draw the expected white background - if I would use a bitmap as background, I would not clear the widgets area first...

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