Eclipse javadoc background color is black
Solution 1:
Window > Preferences > General > Appearance > Colors And Fonts > Java
> Javadoc View Background
Solution 2:
You need to change the 'Tooltip' color in Ubuntu at the OS level.
Solution 3:
None of the answers here worked for me (I have Eclipse Mars and Ubuntu 14.04). I had to edit /usr/share/themes/Ambiance/gtk-3.0/gtk-main.css. I've changed tooltip_bg_color to #f5f5bf# and tooltip_fg_color to #000000. After restarting eclipse, the change took effect.