When the Git History view is not in focus, the active line is highlighted too bright.
IDE Package: Eclipse for PHP Developers
IDE Version: Oxygen.3a Release (4.7.3a) Build id: 20180405-1200
Plugin: Git integration for Eclipse 188.8.131.52712150930-r
Steps to reproduce the issue:
1. Open view: History
2. enter a Git repository, so the History view is populated
3. click on a commit entry in history view
4. click outside of the History view (e.g. on an editor view)
5. The selected line in the History view becomes brigher, resulting in a low contrast between highlight and text
It looks like you are using an optimized version of a Windows 7 theme, maybe with no Aero enabled. Such themes are known to provide limited support for SWT theming. In regular Windows themes the selection highlight is not bright. Attached is the screenshot for your reference.
Can you please switch your OS theme and check how it works?