brushes = files(
  'Acrylic-01.gih',
  'Acrylic-02.gih',
  'Acrylic-03.gih',
  'Acrylic-04.gih',
  'Acrylic-05.gih',
  'Bristles-01.gbr',
  'Bristles-02.gbr',
  'Bristles-03.gbr',
  'Oils-01.gbr',
  'Oils-02.gbr',
  'Oils-03.gbr',
)