Just received an update from the CAA regarding the shading of the Manchester Low Level Route. BAD MOVE I think, or perhaps deliberate? The new shading on the chart has almost obliterated the route, such that if you didn't know it was there, you would just think it was part of the Manchester control zone. I'm sure that some pilots might end up in the Manchester control zone, thinking they were in the low level corridor. Manchester Controllers have never liked this route and the new shading is simply to camouflage it so no-one knows it's there and to keep GA away. We need to have this shading removed back to what is was.