Flag of Portugal green was harder to come up with, given that it was not a traditional colour of the Portuguese flag's history. Eventually, it was justified on the grounds that, during the 1891 insurrection, this was the colour present on the revolutionary flag that "sparked the redeeming lightning" of republicanism. Finally, white (on the shield) represented "a beautiful and fraternal colour, into which all other colours merge themselves, colour of simplicity, of harmony and peace", adding that "it is this same colour that, charged with enthusiasm and faith by the red cross of Christ, marks the Discoveries epic cycle". The Manueline armillary
Flag of the Russian-American Company shows no eagle on the flag flown from the bastion, but clearly shows the eagle placed in the upper quarter on the flag flown from the RAC ship CHICHAGOV anchored in the roads. Aleksandr Ol'gin's water-colour of July, 1837, shows several RAC flags flown from both bastion and ships in the harbour; all have a golden eagle placed in the upper quarter Two very detailed water-colours by RAC skipper Johann Bartram of Sitka harbour, done between 1840–1845 have precise depictions of the company's flag. Given Bartram's profession, both the details rendered of ships and boats as well as the flag