Chameleon is a free Revit plugin. It will help you create drawings and colored displays depending o object parameters.
This plugin has been created in order to increase the room legend of Revit. Thus, whatever category or parameter you want to use, you will be able to create multicolor display depending on them. Your drawings will be easily understandable just like your Revit modeling space.
This plugin can also be used in BIManagement. Making control of models easier.