NIce demo, i needed to see this lots.
you can take the caps off right can you measure the voltage at the leds still ? just for little ol me.
or do a Current test using the exact same battery or power supply, by removing the tail and jumping the tail connection with an ammeter.
because other than a slight tint change (i assume is slight and shows up in the pic more than reality), i dont see a lot of other differances
do you have any conclusions or supositions being there live that we cant see in the pictures?