Is your feature request related to a problem? Please describe.
No it isn't, it's a quality of life improvement

Describe the solution you'd like
A separate slider for the chat box, so you can have a different background on the chat box
Additional context
I'm requesting since in vanilla you can have the chatbox to have opacity and the chat itself not

I'll try to add this soon. Thanks for following the template!

https://github.com/DarkKronicle/AdvancedChatCore/wiki/Modules-List Archiving for modules. This is implemented now.