Request for Black Background Option in WIM Chat History

[Gifkaaa]

Is your feature request related to a problem? Please describe.
I often find it difficult to read the chat history because the current transparency settings make it hard to see the text clearly against certain backgrounds.

Describe the solution you'd like
I would like the option to change the transparency of the chat history or message history to a black background. This would improve readability and make the text stand out more clearly.

Describe alternatives you've considered
I have considered adjusting the current transparency settings, but there is no option to set a solid black background, which would be more effective than just lowering transparency.

Additional context
If possible, it would be great to have a setting where users can customize the background color of the chat history for better visibility. Screenshots of the current settings could be helpful for context.