I set Eclipse in dark mode. Everything is fine, except the word where the cursor is currently located. This is shown with a light foreground color on a light grey background. Almost unreadable.
I could not fine the option to change this setting.
Language: C++
Version: Eclipse 2019-12
I believe this is a known issue.
You should be able to change the color under Preferences --> General --> Editors --> Text Editors --> Annotations --> C/C++ Occurrences.