I like all the top fabrics but would use very small pieces of either orange if you must. However I like the yellow with the raindrops on the bottom far right with the top fabrics and it has a little orange in it so would use it before either of the brighter oranges. I also like the center one in the bottom photo-the grey background with modern flowers---and think they would also be a great filler with the top fabrics. It will be beautiful. Oh I also agree with some black--it always adds drama to a quilt.