In `README`, screenshots with light backgrounds are very unpleasing to eye when using dark theme in GitHub

[rakleed]

Problem Description

In the README, screenshots with light backgrounds are very unpleasing to the eye when using the dark theme in GitHub.

Screenshot:

Proposed Solution

Add screenshots of the app's dark theme when using dark theme on GitHub.

Useful link: https://github.blog/changelog/2021-11-24-specify-theme-context-for-images-in-markdown/

Alternatives Considered

Additional Information