I had this problem with PixelGetColor not giving me the same HEX Color as the AU3Info Tool and searched every were with no luck then had a OH DA moment LoL.
The problem is that the
"PixelGetColor ($mouseX[0], $mouseY[1])"
is looking rite at the very tip of the mouse pointer not under it. So you have to set a -3 after the [0] and [1].
"PixelGetColor ($mouseX[0] -3, $mouseY[1] -3)"
to make it search next to the pointer not on the pointer. You may have to adjust this a