Love the brown coat . Carrying one color throughout an outfit can be too matchy-matchy. But mixing patterns (patterned pocket square on windowpane jacket on striped shirt) prevents this. And the yellow lapel pin adds such a cool pop.
I dont normally like these jackets but this one looks good. Every business man needs a definitive sports jacket. Checkered blue jacket with a small yet eye-catching lapel pin (in maroon, no less) works wonder with in an otherwise plain blue/grey ensemble.