If it's too light a color, it'll probably look out of place, and if your fall and winter are actually cold, will probably wear too cool.
The basic rule is that if the weather is appropriate for a garment, you can wear it. So no tweed in summer, or linen in winter. Because one of those things is intended to keep you cooler in hot weather, and the other intended to keep you warm in cool weather.
The coat is the blue one on the right.its 47% wool 53% linen