Well, it could be part of a message...
...or it could be that the dark blue in the seal sort of disappears when the seal is placed on a podium of the same dark blue, leading to the use of an approved variant.
Reminder: A son of Democratic vice presidential candidate Joe Biden was paid an undisclosed amount of money as a consultant by MBNA, the largest employer in Delaware, during the years the senator supported legislation that was promoted by the credit card industry and opposed by consumer groups.
https://www.cbsnews.com/news/mbna-paid-bidens-son-as-biden-backed-bill/
