How to fix black tooltips in Eclipse?

Question

I am having a weird problem with Eclipse documentation tooltips. When I startup Eclipse the tooltip works as expected:

But after I press the down button the tooltip turns black:

and stays like that for the rest of the session.

I am using Eclipse Galileo and Ubuntu 11.04 with the classic desktop.

EDIT: I am only experiencing this problem in PHP Development Tools. The tooltips work in Java and Python projects.

Answer 1

The answer from Arkaduysz's works if you correct the second line. the gksu would try to change root's settings I think.:

Install:

sudo apt-get install gnome-color-chooser 

run it:

gnome-color-chooser 

Go to "Specific" tab, check and setup background/foreground colors in tooltip box. Apply & Close.

Answer 2

I managed to solve this problem by switching to the Radiance theme and then setting the tool-tip color in Appearance/Customize.../Colors:

When I tried the same thing with the Ambiance theme I started getting weird color errors all over my desktop.

Answer 3

Install:

sudo apt-get install gnome-color-chooser 

run it:

gksudo gnome-color-chooser 

Go to "Specific" tab, check and setup background/foreground colors in tooltip box. Apply & Close.