Sorry. You're too late.
There's this one:
dog Nail Clipper LED light products - China products exhibition,reviews - Hisupplier.com
Nail grinder with LED:
Amazon.com : FURminator Nail Grinder : Furminator : Pet Nail Clippers
Normal clippers, with with a sensor. The LEDs light up to let you know if it's safe to continue:
QuickFinder Deluxe - Pet Nail Clipper With Automatic Quick Sensor - The Green Head