Hi Paul, I appreciate your looking at this. I don't have that specific file anymore. I nixed the idea of lighting with an HDRI and am using a V-Ray Sun. The plants are lighting correctly. So, the issue had something to do with the HDRI. It was a good one that I purchased online from Peter Guthrie. It was also in a V-Ray HDRI map.
So now that I have that corrected, the real question I was wanting an answer for was, "can you globally adjust an entire Forest", one that may have 30 or 40 maps? The grass I have now is too green. I know I can render a mask but is there a "global" way to adjust the color of the entire grass Forest?