Eclipse doesn't show right color under Ubuntu

Refer to:
http://askubuntu.com/questions/70599/how-to-change-tooltip-background-color-in-unity

Install and open gnome-color-chooser .
Go to Specific → Tooltips and put black foreground over pale yellow background.

Error creating managed object for class org.jboss.weld.servlet.WeldListener

I choose to let glassfish publish new changes automatically and when I was adding @Named to one EJB, this error popped up.

Solution: Restart Eclipse and it is gone.