Dark theme context menu and tab navigation is not black

[d-gs]

Bug report

Expected Behavior - What were you expecting to happen?

The context menu and the tab-navigation on the tab-folder for progress dialog should be shown in black for the dark theme.

Current Behavior - What happens?

Currently they are white-themed and that also means that the icons are not themed either in the cases where that is relevant.

Possible Solution

Fix the dark theme and implement icon-relevant switch for those use cases.

What are the steps to reproduce this issue? (for bugs)

1. Use dark theme on GEM
2. Open context menu and/or tab-navigation on progress dialog with many tasks
3. The dark theme is not applied to that part of the view

Context

Only affects dark theme.

Your Environment

• Version used: latest
• Operating System and version (desktop or mobile): Windows

[StefanFranzWeiser]

Works for Eclipse 4.16.
See https://www.eclipse.org/eclipse/news/4.16/platform_isv.php