sprinkling (techniques)

A scattering of small droplets of coloured stain or liquid pigment on the surface to be decorated. Sprinkling was traditionally carried out by striking a large brush charged with colour against an iron bar over the surface to be sprinkled (a cover or a bookblock edge), or, more recently, by rubbing a brush with short bristles dipped in the colour across a metal sieve or grid.

AAT

The Arts and Architecture Thesaurus Online, The Getty Research Institute.

Additional reference: 
http://vocab.getty.edu/aat/300252700 (modified)
Broader concept: 
Broader partitive concept: 
Top concept: 
techniques
Getty AAT: