Motorola Atrix 4G :: LED Blinking Color Code States During Power Up

I've had two Atrix phones since March of this year. The first one was replaced for an issue unrelated to the topic of this post. Both of these devices demonstrated the following behavior:

Approximately every 15 to 25 power cycles, when the Motorola logo starts to animate the phone's LED will begin to blink in one of several colors. It stops blinking when the Motorola logo disappears. The blinking color is most often violet-purple. However, on at least three occasions I've seen it blink light blue and on one occasion it was blinking red.

The blinking LED at this stage of system initialization appears to be a color coded reporting mechanism to indicate a particular state of the phone (perhaps a failure code reporting feature). I'm guessing it's similar to the POST beep codes that a personal computer emits shortly after powered on to indicate such things as device failures, driver loading issues, or configuration problems.

I would like to know what these colors mean during this stage of the phone's booting process. That is, when I see the flashing LED during the Motorola logo animation, I want to know which part of the system is failing. There's no information on the web (including within this forum) that I've been able to locate on this and Motorola technical phone support personnel seem oblivious to the fact that this blinking color reporting even exists.

how to learn what these codes mean? As I've mentioned, both of my Atrix phones have demonstrated this behavior, so I presume all Atrix phones are equipped to demonstrate it as well under certain conditions. It's hard to imagine that Motorola engineers would have implemented a feature like this and then provided no information to anyone about what the color codes mean to make the feature useful.