Question: Riemann Sum shading

All: I am comparing examples of Lower Sums, Upper Sums, and Random Partitioned Riemann Sums. For the lower and upper sums, the leftbox and rightbox commands produce satisfactory box shading results, green RGB(.7,.9,.7). For example: leftbox(x,x=0..2, 4); However, I can't get the RiemannSum command to shade. I have used all of the tricks that I know of and all that I can do is change the color of the outline of the boxes. For example: RiemannSum(x, x = 0..2, partition=2, method=lower, output=plot, showarea=false, outline=false, boxoptions=[color=black, thickness=2], thickness=3, title="", tickmarks=[5,6], labels=["",""], scaling=unconstrained, refinement = random, functionoptions = [legend="", color=RED], partition=random[.75]); Any ideas as to how to shade the RiemannSum boxes with green RGB(.7,.9,.7). Thanks again.
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