>How about inverting it until a "release" code has been received

Hijack v273 is now available with this feature.

Instead of just specifying keypress_flash=1, you can now replace the =1 with larger numbers, representing the maximum number of hundredths of a second you want it to stay inverted.

For example: keypress_flash=100 will hold the inverse display for up to one second, or keypress release, whichever comes first.

Cheers

-ml