They use the Portuguese flag, just like the rest of the Portuguese Empire. The ensign is simply the coat of arms surmounted by a crown on a white field. ...
Below is the flag that would have been used.
http://http://upload.wikimedia.org/wikipedia/commons/thumb/3/33/Flag_Portugal_(1707).svg/2000px-Flag_Portugal_(1707).svg.png
The link doesn't work because you've copied {http{colon} and the two slashes twice. Cutting it down to just the "upload..."etc worked on my browser.
Like this.
I wonder if everyone here shares Skywalker's quite dismissive and not exactly unpacked opinion of the French First Republic. As a child of the modern world I just don't get people who claim to just despise the great French Revolution. Sure, it was quite abortive in its aims--in large part because the people who made it had very diverse aims. But I think it is clear enough that there was no going back from it. There were lots of people who were against it from the get-go and who did want to go back-but had they been anything approaching a majority of French people, the whole thing would have ended pretty abruptly. The peasantry in certain regions was against it, but most of the peasants in the countryside took irrevocable steps under inspiration of the urban rebellion to overthrow the hated local seigneurs--when they became afraid the Old Regime might return in force, they stormed the local mansions and destroyed a lot of records lest they be used to put them back where they were before.
I'm with Mark Twain in
A Connecticut Yankee in King Arthur's Court in his protagonist's answer to those who scorn and denounce the Terror of the revolutionary years--that they forget the other Terror, of two thousand years, imposed on the low people. It is easy to see how aristocrats and monarchs of the Old Regime should be disgruntled by the ideals and accomplishments of the Revolution, but hard for me to see how most of us, children of peasants as we are, should be dismissive. Yes, they failed to establish an immediate Utopia of fraternal brotherhood and some pretty vile tendencies came out. But the nation of France was objectively under the threat of massive invasion from essentially every nation of any consequence in Europe; that explains much paranoia.
The immediate outcome was a series of dictatorships of small cliques, ending in Napoleon's. But whether he liked it or not, Napoleon was stuck with a solid revolution in human relations that, encoded in the
Code Napoleon, remains the legal basis of all European continental nations to this day.
And I don't see how one can be dismissive of the fact that out of Revolutionary France, Napoleon somehow acquired the material for a military machine capable of dealing with all the crowned powers of Europe single-handed; he got, from the countryside of France, all the men he needed to steamroller everyone else. Clearly the transformation the Revolution worked on France was something that enabled Napoleon and his successors to engage the energies of his nation, and later the rulers of all European nations could as well, on a higher level than the old regime could.
Now all that is OTL; here some things are different. Just recently some questions have been raised in other threads, about whether an ideology of "scientism" could have emerged in a powerful nation (as something like it did in Mexico under Diaz, and Brazil as well) and it struck more people than me as what the Revolutionary "Cult of Reason" was trying to achieve. If France's loyal Catholics all flee, are crushed by Republican or alt-Napoleonic armies, or embrace some edition of science-worshiping atheism, then it will be harder for the revolutionary ideals to spread-but if they do, where they do will have been shifted more than OTL and will probably fight tenaciously to resist any sort of restoration.
I don't actually see that happening here; this Napoleon will probably, as OTL, reconcile post-Revolutionary France with a partial restoration of Catholicism--but on terms dictated by the war lord mostly, and with the elites of civil society remaining skeptical and cynical.
OTL Napoleon's foreign supporters, along with the Jews he generally emancipated everywhere he conquered, included the Poles--here with a reformed Kingdom of Poland having remained strong enough to survive and avoid partition, that seems much more dubious. This timeline's Polish establishment owes Napoleon nothing and the Bourbons everything.
Also, of course, the strength of Britain is reinforced by retaining their north American colonies, and of the coalition against France, redoubled by the swollen population of New France as well, plus of course the great reserves Portugal could bring to the alliance. Napoleon would do well to defend France and perhaps expand it a bit.
But OTL the power of his new mass armies, however enhanced they also were with new tactics and strategies, swept the combined powers of the Old Regimes before them on land; here he has scarcely a pretense of a navy, but I think the great coalition against him is in for a hell of a beating on land, and will soon realize that taking back France, despite all the gains made hitherto, will be far more difficult than they realize now, and the footholds they've gained will soon be lost. Being more forcefully hemmed in might simply have the effect of concentrating Napoleon's mind on consolidating his hold over what he's got, and make the eventual post-Waterloo (really, post Russian disaster) collapse of the Empire and restoration of the Bourbons briefly for a decade and a half impossible.
We should not forget that revolutionary forces are at work within the whole array of the old regimist nations allied against France at this time. The question of conflicts of interest between the European mother countries and their colonies might come to a head the more the former draw on the latter in their efforts to break Napoleon. Also, the more modernized the coalition members are, the more disgruntled the working classes of even the core metropolitan countries are. Britain OTL during the Napoleonic Wars and for quite a long time after was the scene of much lower class discontent; a surviving Napoleonic France that encodes many of the social and legal gains of the French lower classes in its basic laws might be a dangerous inspiration for a lot of British subjects; Wellington certainly thought they were OTL long after he put paid to the French emperor himself; what if he's still defiantly ruling across the Channel?