I usally wear a black polo with black hose and either red or yellow hose ties. Sometimes I wear my Black Stewart tartan flashes.

I know it's a lot of black which is not for everyone but it is one of my favorite colors.

I like your idea of maroon hose with a maroon polo. I think it will work nicely. When pleated to the stripe the Black Stewart has a very maroon/burgundy appearance from the back. So, I think it will look great even if yours is pleated to the sett. The colors go well together.