title: Mouse pointer invisible with color inversion using xcalib
body: <p>I use xcalib on Ubuntu to invert my colors.
  All colors invert, except my mouse pointer.</p>
  
  <p>This results in an invisible mouse pointer in Mathematica and Eclipse. (black background and black mouse cursor) These programs override the default mouse cursor.</p>
  
  <p>Please let me know how to invert my mouse cursor when my screen inverts. (or let my system prevent the overriding of the default cursor)</p>