I was shooting last night about 30 minutes before dusk and was having a hard time seeing the target with my 20 yard green pin. I have tru-glow sights whicharen't too expensive (maybe 30 bucks).I noticed thatI was able to see the target better with the 30 yard redpin.Isn't the green pin supposed to pick up more light during lower light situations.Also, what is the normal color scheme for 20, 30 and 40 yards? Maybe I have a cheap set-up. Any recommendations?