I haven't worn it much through the winter and now realize why—it just feels more at home with white linen pants. I think I feel this way because it's a very lightweight fabric and the color is a lighter than typical dark navy. The buttons are currently a matching dark navy (as you'd find on a suit). For comparison, there are several pics of it from different seasons with different combinations. My first inclination is white mother of pearl, but perhaps black/smoke MOP or brown horn or something else would make it more versatile and wearable all year and not just in the hot summer. If you have an idea besides one of my poll options, comment with your idea! (pic courtesy ebw1, who i bought this from a while back) Spoiler: Warning: Spoiler!