I saw a couple threads from Li On and many others about their settings on the AE-100. The basic ones (brightness, contrast, sharpness etc) are right there in the Picture menu.
And for R, G, B and any additional tweaks? What do I need to do to access them? Is there something I'm missing?
If you read a bit more into the threads or the owner's manual you should see that the RGB level adjustments are only available when a VGA input is used. I don't believe anyone has uncovered any hidden service menu type adjustments yet.