Use Assets : Workflow Enhancements : Labeling
   
Labeling
The record field type Label enables users to label records by assigning colors. Each Cumulus catalog provides a standard Label field but the user can add more fields of this type. For any field of this type the user can define a color range. The Label Editor tab of this field type’s properties window lets you determine the label colors. Additional colors can be defined by a color picker value.
Label fields can be displayed in all views. For certain views you can select the colors of a specific label field to be the background of the entire record or of the record’s name.
Of course a label field itself can also be included in a view. To set up views that display labeling:  Cumulus / Edit > Preferences > Record View Sets.
The labeling color for a record can be set in the Information window via list selection or by a menu item via the Asset menu.
The menu item Assign Label will be available only if the effects of assigning the label can be immediately seen by the user. This means that it is available only if at least one label field is included in the catalog AND if at least one label field is included in the current view or set as background for records (entire record or record name) in the current view.
The menu item will assign the label set as background of the current view. If no label is set as background or for views where a label cannot be set as background, the menu item will assign the label from the first field of type Label from the current view. (The order refers to the field list of the view settings in the Preferences dialog.)
In the Information window, the field will be displayed as a drop-down list. The current color is displayed and the available colors are included in the hidden list. To select a color, open the list and select the desired label color. To remove a label, open the list and select the no value entry.
When printing labeled records, the label marks are printed as displayed (if the Label field is included in the fields to be printed.)
NOTE: Multiple Labeling Systems!
Each catalog can have its individual labeling system. However, be careful using multiple labeling systems. If you work with several catalogs in one collection, you might not like to have different colors caused by individual labeling systems for the different catalogs. Label fields with the same name included in multiple catalogs but with their colors defined differently might cause confusion. The records will always show the label colors set for the catalog they derive from. But if you have multiple records selected that come from different catalogs with different labeling systems the Assign Label menu item is of course disabled.
You can search for labeled records and save such searches as search queries.
NOTE: Changing Label Color
Each label's value is defined by the label color. So, if you change a label color, make sure any saved queries that refer to the label are updated to use the new color value.