Comment 63 for bug 540332

Still happens on Eclipse 3.7 and ubuntu 10.10 with the added bonus that with unity you can no longer change the tooltip colors unless you install some third party stuff.

I solved the problem copying the "Radiance" theme to my .themes folder under a new name and changing colors there as suggested on http://askubuntu.com/questions/70599/how-to-change-tooltip-background-color-in-unity/70665#70665 (and for reasons that escape me I could only choose the new theme using gnome-tweak-tool)