Is it sacrilage to suggest polyurethane on an Adirondack chair? I sanded and applied several coats of satin finish polyurethane to a similar wooden porch chair, and it looks lovely and wipes clean ...

I agree with the posts above that suggest a warm cream or buttery color-- the other side of the color wheel from the cool purple will help to balance your color scheme.

Ooooh, love. Pick me, pick me!!!