Have you considered doing some sashings the orange, some a lighter peachy orange, some the spring green and a few the bright yellow. If you changed the sashing colors in a diamond shape, it would mimick the on point placement of your blocks and look deliberate. I personally would just like the colors to look like they faded into the other colors. You could try it out in your quilt program. That way you would still use some of the orange but you would get a fade effect that would then pop different colors in your different blocks. If you do decide to do this I would change the inner border to one of the "more subdued colors but I would keep the orange as the binding. Repeating the color in 3 areas (sashing, floral print and binding) makes it a winner. I am just not sure I would use it for all the bindings. Just wanted to give you a different idea.