Jagex should change the color of the yew trees, willows, etc, every few weeks or so (the leaves, the bark, the whole thing), so that everytime Jagex changes the color, the macroers have to reprogram. Of course, this can be costly, so maybe jagex can have 10 programmed colors to the yews, and the changing of colors can be random, or the shade of the one of the 10 programmed colors can change. Ex: dark brown bark to light brown bark. Hopefully I'm not asking for too much, but I think this could help the problem with macroers.