Like a Model T Ford, they come in basic black.
This one had a 100 Amp breaker ahead of it, which actually DID trip, after both busses and the interior's mounting plate burnt through completely.
Here's the parts The blob at the bottom used to be the buss material.
I had heard of FPE problems which were described just as this (and fires starting as a result), but this is the first time I actually saw one first hand myself.
How do you like it??