Metallic paints could be rolled, brushed, sprayed, or sponged on most surfaces. Both acrylic or water-based metallic paints could be used through out the house. Do some research and find out if your choice of paint is apt for the task at hand. Not all paints can be applied to any surface. Metallic paints for wood surfaces are also available. To achieve a translucent look, you can mix glazing liquid to the paint.
Metallic paints can also be used to create a brushed-steel look. One can also use silver and aluminum metallic paints over a black base coat, to achieve a steel patina finish.