Settings menu has white background

[ChristophWurst]

Steps to reproduce

1. Open the app
2. Configure an account
3. Open the settings menu bottom left

Expected behavior

Pleasing design

Actual behavior

Mail app version

2.0.0 beta 1

Mailserver or service

No response

Operating system

No response

PHP engine version

No response

Web server

No response

Database

No response

Additional info

No response

[GretaD]

fixed here #7158