I'm sorry, but you are only partly right.

Let me first say this confusion exists also amongst some Latin Americans because there is a lack of Latin American history (as South American and Central American continents) taught in Latin America. Each country focuses largely on their own because each country has such a rich and diverse history.

But let's take your argument apart.

BROWN:

The whole subject of "brown" and their diverse shades has been discussed before and is currently joked about in Peruvian politics, where Alan García said he was more Peruvian because of his "copper" skin color. Naturally, this is ridiculed by most because it is a joke to talk about skin color since mestizos can be all shades of brown (indigenous blood notwithstanding). And then there is tanning (even mentioning this sounds ridiculous); as in, there are people with lighter skin who just happen to be tanned, because they live in an area where it is mostly sunny (sometimes all year round). You'll find a higher percentage of "white"-looking people in capital cities in Latin America. And many mestizos can pass off as Spanish (from Spain, just in case it isn't clear). And there are also indigenous peoples who are white (see indigenous groups that live closer to the Andean Cordillera or similar places of higher altitudes, such as Huaraz where there is a mix of all skin colors and valleys such as Pasco where there is an Austro-German community that immigrated there from the late 1800s. Uruguay probably has a larger "white" population than Argentina, and Paraguay has a very high one, too. You'll find lots of white people in Southern Brazil. One last thing about "brown", Latin Americans generally accept, rightfully so, that being "brown" has very little to do with Moorish or African ancestry, and if you have any noticeable Moorish or African features, you are mostly considered to have "black" attributes, since blacks do not originate from Latin America.

LANGUAGE:

No, most people do not speak French as their native language in Latin America and the Caribbeans. Haiti is the obvious one that has French and Creole as their official language, but only about 10% speak it fluently, and this is in a population of 9 million. French Guiana obviously has French as their official language, but they're a population of 217,000 with many people speaking other dialects and languages. Suriname has Dutch as their official language, with Guyana and Belize having English as theirs and a minority speak other Cariban languages, with tiny Belize having 40% Spanish speakers, I believe. These countries are minorities, though. That's about it for French. Portuguese is only spoken in Brazil, a country with a population of 203 million. All this out of a population of 580 million in Latin America. As for Guaraní, yes, it is an official language of Paraguay, with 4,650,000 speakers; a majority since the country's population is 6 million, but still a minority within the total Latin American population. If you want to count a language that is spoken by 200,000 people (Mapuzugun), go ahead, but then we start getting into the smaller languages and dialects, too, which are many, all throughout Latin America. Peru and Bolivia are interesting in that they sought to preserve indigenous culture. Peru's official languages are Spanish, Quechua and Aymara, in order of amount of speakers. Aymara is actually spoken by very few Peruvians, though, and Quechua by 13% of the population--another minority language. Quechua is spoken by 20% of Bolivia's population, and Aymara 14%, with Spanish being the majority.

I mention all of this so you can have a perspective for what I am about to say about language in Argentina. When colonizers arrived in modern day Argentina, there were about 35 languages spoken there. Now there are only 12. A variant of Quechua (called Quichua, most likely different from the "Incan" Quechua) is spoken in Santiago de Estero by 100,000 people, a city founded by Spanish settlers. Four Guaraní variants are spoken in Argentina: Chiriguano (known in Argentina as Ñandeva) spoken in Jujuy and Salta by about 15,000 people; the Guaraní Correntino is the official language of Corrientes; Mbyá is spoken by 3,000 people in Misiones; and lastly, the Paraguayan Guaraní spoken at various parts of the borders. Chaco has "co-official" languages: Qom, Moqoít, and Wichí (spoken by 45,000) from the Mataco language family. In Rosario, there are about 10,000 Wichi speakers/peoples. There are other dialects and subdialects such as Mivaclé, Chorote, and in Patagonia (Santa Cruz, specifically), Tehuelche (Aonikenk or Aonek'o 'ajen), with all these also being minority languages/dialects and the last spoken by just a few; there used to be more in the south, but the Conquest of the Desert nearly wiped them all out.

My point is there is a wealth of variety in each country, and many minority languages and minority peoples. Argentina is not an exception. All of them mixed with some type of European, whether it was a Western, Central or Eastern European.

And just to be clear, very few Catholics believe in Catholic saints that correspond to "American gods". And if by "American religions" you mean "indigenous religions", then, no. Most of Latin America is Roman Catholic, with an increasing number of Protestants, namely in Brazil.