(The "regulars" on this site already know what I will say.)
BUST OUT OF THE TWO-COLOR BOX.
For some reason every bride-to-be gets mesmerized into thinking she is limited to two colors, one dominant and one accent. You will still be legally married if you surround yourself with more than just two colors.
Think, instead, of a color palette. Go to a paint store and get a bunch of color chips. Cut them apart, then mix and match until you find a palette that pleases you.
When I think of clover green and dark brown, I think "forest". What other colors are in the forest? Other shades of green, many shades of brown, oranges, rusts, reds and the occasional bright white or pink.
Next out-of-the-box suggestion: Why put people in identical clothes? Why not have bridesmaids in various shades of fall, forest-y colors? Why not have groomsmen in similar colored ties and vests?