The Select By submenu on the Edit menu provides commands for selecting objects in the scene by color, name, and other characteristics. It also gives quick access to the various Region selection options.
Select By Color lets you select all objects having the same color as the selected object. Selection is made by wireframe color (see Object Color Dialog), rather than by any materials associated with the objects.
Select By Name lets you select objects by choosing them from a list of all objects in the scene.
Select By Layer lets you select all objects in one or more layers by picking them from a list of all layers in the scene. Choosing this command opens the Select By Layer dialog; use standard methods to highlight one or more layers, and then click OK. The dialog closes, and all objects in the highlighted layer or layers are selected.