There's a new plugin which provides full theming for Eclipse:
http://brainwy.github.io/liclipse/
It's integrated with Eclipse Color Theme so that when a new theme is selected in preferences > general > appearance > color theme, the proper background is also applied to other parts of the IDE (theming everything or just views which are previously registered according to a combo in that same page).
And besides theming it provides a bunch of other things :)