~$*b::
Loop
{
  GetKeyState, released, b, P
  If released = U
     Break

  ; possible colors RGB -> countered by (button):
  ; 990000 "R" -> B (c)
  ; 006600 "G" -> R (z)
  ; 0033ff "B" -> G (x)

  MouseGetPos, xpos, ypos
  PixelGetColor, myColor, xpos, ypos, RGB

  if (myColor = 0x990000) {
    Send {c}
  }
  else if (myColor = 0x006600) {
    Send {z}
  }
  else if (myColor = 0x0033ff) {
    Send {x}
  }
  else {}

  sleep 400
}