Configuring CS4: frame around masks?

[pixelator]

I often find myself mistakingly painting with a brush on a layer instead of the mask as I should.
Is it possible to configure (or hack) Photoshop CS4 on a Mac so that when I select a mask it's outlined with a bright color instead of just a black/white dashed frame as now?

 

[Nomission]

Maybe there's a future features list at Adobe. I seriously doubt that the change of color will solve your problem. Until then, undo does the trick.