Download the plugin here: http://eclipsecolorthemes.org/?view=plugin
If you are on Eclipse 3.6 (Helios), the easiest way to install the plugin is from the Eclipse Marketplace. Go to Help → Eclipse Marketplace ..., then find the Eclipse Color Theme theme and install it.
If you are on Eclipse 3.5 (Galileo), go to Help → Install New Software ..., click Add Site and enter Eclipse Color Theme as the name and http://eclipse-color-theme.github.com/update as URLs Then select the new entry in the "Work with" selection box, check the "Color Eclipse Theme" to install and continue.
Please note: if you are using a version of the plugin below 0.6, please uninstall and reinstall it following the instructions above. Updated site and plugin ID.
Using
After installation, go to the menu "Window" → "Settings" → "General" → "Aperture" → "Color Theme" to change the color theme.
source share