The Ohio Star or Irish Chain are good traditional patterns and keeping the fabrics toned down and softer than saturated color will keep the traditional look. The Irish Chain is great in just two colors, a light background and any other fabric that isn't saturated with color, even bright calico would be tradional.
One of my favorite combinations of "old" or traditional is cheddar yellow, turkey red and indigo w/ an antique white thrown in the mix.
Good luck with your project and please post your choice and progress.
peace