.Try messing around with all of these setting and i know the setting are different for everyone. And if you have any picture noise reduction (some times called DNR) try that because on my tv it has reduced the problem slightly. If that still hasn't done the trick, (it gets a little advanced)... still with your T.v Remote reduce the blue/turqoise colour value down significantly but raise every other colour slightly.
Have a go and please get back to me on your results, but I must repeat I know it wont work for everyone, on my T.v it has gone, and can only see it if you stand 20cm from the screen and focus with nanovision on. When setting up the T.v please have patience it can take a while to find the optimal setting... good luck