Pocket squares are the single most indispensable fashion accessory for defining a man of style. There are no firm rules for choosing pocket squares. Simply put, it should complement your neckwear and shirt, never match. They can add a touch of refined elegance or can be a statement of rugged individualism. So go ahead, try mixing colors, textures and styles, if it feels right, then wear it!
"Wonderful! Just about the most luxurious thing I have ever owned, I think." R. Jennings