I think a yellow or green inner border might be nice. I think the green in the stripe fabric isn't quite right for the greens in the quilt. I'm not sure about using that plaid as an outer border, even though the colors are perfect. I think I would try something quieter as an outer border, probably mostly in green. I think the red stands out nicely in the quilt interior and needn't be accentuated by a red border. But definitely take some pictures with all the possibilities! Pictures help me so much in making design decisions!