Enabling FroYo requires disabling the device's battery monitoring process, the very one that would be responsible for shutting down the device before the cells start overheating and, ultimately, going critical. Yeah it's unlikely,
And, thankfully, there is a much easier way coming, with Barnes & Noble confirming that Android 2.2 will be officially coming to the Nook Color in January. Yes, Android 2.3 is what's happening, but this is still an exciting upgrade as it will finally also allow access to a traditional Android home screen and even enable the Android Market. In other words, it should work just like an Android tablet, Kindle app and all.
Update: Okay, cancel that order for an asbestos carrying case. One of the developers of the Nook Color root wrote in to let us know that there is a secondary temperature monitor which should keep things below the ignition point. Hack away -- or just wait a month.
Source: Engadget