Racing Green Formal Dobby Shirt. Every formal wardrobe needs a range of shades, and Rio formal shirt offers the perfect darker hue. Constructed in a deep navy dobby with a white micro square detail, design features include a penny round collar and skinny concealed cuff plackets. There are highlights of white x stitch at every button and contrast white poplin trim at the side seam gussets, inner collar stand and cuff guards. Wear with a navy suit for a tonal effect, or with dark denim or brown chinos for a sophisticated smart-casual look.