Broguing
The more decorations on a men’s shoe, the less formal the model. Highly decorated shoes belong to leisurewear.

Generally speaking, the following rule of thumb holds true: the more formal the occasion, the smoother and less decorated the men’s shoe. In other words, shoes featuring elaborate perforations are unsuitable for special occasions. The more decorations and patterning on a shoe, the better suited the shoe for leisurewear.
Of course, there are no rules without exceptions: black brogues pair wonderfully with dark suits, and they’re absolutely permissible workplace attire in most business sectors.
For further consideration…
Sole and Upper Shoe Colour Body Type & Shoe Selection Special Occasions Smart Casual Casual & Leisure Wear Accessorize Loafer & Monk Strap