The olive and mustard with some tile red and indigo could make good looking applique in a folk design. Maybe primitive birds, animals, trees, and flowers on a more subdued background. I don't mind their chosen colors but I don't like the thought of a nine patch in olive/mustard. If you do feel nine patch is the way to go, perhaps some repro. 1930's prints with bits of mustard and olive included in some of them. Good luck.......and remember....... life is too short to labor over an ugly quilt.