Both assumptions are correct.Am I correct in thinking that you think navy sport coats are versatile, so you want to get them in the appropriate seasonal fabrics?
Can I ask if you also live in an area with very distinct seasons?
Over the years, I have tried SC in different shades of brown, green and navy. I always feel most comfortable in a solid navy (or solid oatmeal). Maybe I am just not experienced enough with patterns and other colors though
I currently have a w/s/l navy hopsack that serves me very well in warmer weather. However, winters here are -10 to -20 C, so need something for the colder days.