How can I configure the font size for the tree item in the package explorer in Eclipse?

Question

How can I configure the font size for the tree item in the package explorer/outline in Eclipse?

Which item in Font under Preferences I should change?

Answer 1

For Mac users:

In file:

plugins/org.eclipse.ui.themes_1.0.1.v20140819-1717/css/dark/e4-dark_globalstyle.css

Find this code snippet:

Shell[style~='SWT.RADIO'][style~='SWT.CASCADE'][style~='SWT.SHADOW_ETCHED_IN']
[style~='SWT.SHADOW_ETCHED_OUT'][style~='SWT.RESIZE'][style~='SWT.MENU'][style~='SWT.FULL_SELECTION']
[style~='SWT.DATE'] > Composite > * > Tree {

    background-color: #2F2F2F;
    color: #CCC;
}

Modify it adding information about the font size:

Shell[style~='SWT.RADIO'][style~='SWT.CASCADE'][style~='SWT.SHADOW_ETCHED_IN']
[style~='SWT.SHADOW_ETCHED_OUT'][style~='SWT.RESIZE'][style~='SWT.MENU'][style~='SWT.FULL_SELECTION']
[style~='SWT.DATE'] > Composite > * > Tree {

    background-color: #2F2F2F;
    color: #CCC;
    font-size: 13;
}

This example is for the Dark theme in Eclipse v4.4 (Luna).