I wear a white belt if I am wearing white shoes occasionally. I tend to match shoes and belts. Most of the time my shirt isn't tucked in so no one would see it anyway. I don't really care what people think about it but@Piz
I see a lot worse clothes worn on a regular basis on the golf course. Guys wearing jeans, corduroy pants, golf sweat shirts from 1981 and pleated pants! Pleated pants should be banned and burned in every capacity. People make a big deal about a white belt and there's million worse atrocities on the golf course.