Years ago when the denim idea was new, this was really popular as the heavier looking double thread had much more impact. It stood out and was very effective. Doubled red thread was most popular especially on blue jeans and wearing a red tee-shirt and red socks for casual wear. Choose your own shoes.
Or - just the red stitching on the jeans and a smallish red scarf around the neck. Don't forget to wear a top or you will get cold boobies. Just thought I'd mention that. Lol Gleniveve