Can you post a picture of the fabrics? Go to your fabric store and look around at the prints, find one that really speaks to you that you love the colors of (w/o regard for the actual pattern) that has your green in it (or very close) then look at the other colors in the print (usually it has them on the selvedge) and pick from those. You can do similar w/ art work, looking at pictures of paintings online and when you find one that really speaks to you draw your color inspiration from it.