BRUCH,
I agree with Derek on this question. Chartruese, although a great color for walleyes in most systems, definately not the only go to color that pays dividends to an angler day in and day out. I fish Mille Lacs about 70 times a year on open water and fish crankbaits about 69 of those times every year. Colors of choice often have fluctuated by hour, day, week or month due to desired forage, water clarity, water temps, depth ranges, lure speed, sunny, overcast, wind or calm conditions as well as many other unpredictable frontal weather factors that us anglers deal with on a daily basis. The only reason I have mentioned this is because I have seen color patterns fluctuate dramtically in a day or a week or a month and have seen conditions where one color will definately out shine another and then an hour later things shift 180 degrees. Color has often been a very controversial factor in fishing conversation, but is definately valid factor when pursueing your targets.
Ever wonder what color is most desirable in 25-30 feet of water? How about suspended fish feeding upward in the water column, and what color stands out here? I have wrote an article that will explain more on this and how I approach my crankbait fish! Look for this in a few weeks.
Bottom line is chartruese is a great walleye color but keep an open mind when deciding color patterns and let the fish determine what they want and when they want it.