Sun's implementation of the label_encodings file supports a LOCAL DEFINITIONS section. This section is optional. The section can be appended to an already-existing label_encodings file. The word LOCAL in the keyword that starts the section means local to Sun's implementation.
Options in the LOCAL DEFINITIONS section set label translation options and associate colors with labels. The title bars of application windows display each label against a background of the color that is specified for that label. If an invalid color or no color is specified in the COLOR NAMES option, a default color is supplied. Chapter 5, Customizing LOCAL DEFINITIONS describes how to modify the Sun extensions for your site.