Eclipse luna ships with an integrated dark theme, I downloaded Eclipse CDT and deleted my workspace to reset Eclipse configuration.
I switched to the dark theme and restarted Eclipse; the UI doesn't look like expected:
I also have checked for updates within Eclipse (no update found) The theme is supposed to look like the screenshots in the link.
3 Answers
Fix text editor colors:
Help > Eclipse Marketplace > Search for "Eclipse Color Theme" and install it.
Then go to: Windows > Preferences > General > Appearance > Color Theme