Update Dec. 2018: as mentioned in howlger's answer, Eclipse Oxygen 4.7 (June 2017) does now include a way to configure the background color in popups: See "Colors in interactive popups" Interactive popups like JDT's Quick Outline don't use the platform's tooltip colors any more, since those were sometimes hard to read. Old style: New style: Go to Window > Preferences: General > Appearance > Colors