[Dark Mode (Alpha)] Lack of contrast, colors and brightness

Problem to solve

The lack of contrast, colors and brightness in the Dark Mode theme

Intended users

People that want to use the dark mode

User experience goal

Easier to tell elements in GitLab's dark mode.

Proposal

I would advise to inspire with the following image:

Further details

Despite the problems being three things (lack of contrast, colors and brightness), they affect the user experience and user interface. It is hard to tell where the buttons are, where the status bar is, etc.

Availability & Testing

Links / references

This image was taken from the following repository: https://gitlab.com/vednoc/dark-gitlab.