Option to Disable Transparent Backgrounds for Better Readability

[johtoGit]

Many areas of the app (such as Plan, Places, and other sections) use transparent background styles. While this may look visually appealing, it significantly affects readability.

The combination of:

• Transparent backgrounds
• Low contrast color schemes
• Small text and icons

makes it difficult to clearly see content, especially in situations with varying map colors or background contrast.
Please consider adding an option to disable background transparency and use a solid color, high-contrast background instead.

[mauriceboe]

Thanks, coming in #1370