Probably because Spaniards themselves are mixed. The Moors (Arabs and Berbers from Northern Africa) conquered Spain in 711 AD. While most Spaniards will deny having African heritage, the truth is that the Moors were there until they were expelled in the late 1400s (around the time Columbus was getting ready for his voyage to the Americas) so there's a good chance there was a little bit of mixing going on in those 700 years. Additionally, Spain had a very large Jewish community (as did most of Europe) and the Jewish diaspora originated from what we now call the Middle East, so those folks probably also had a little color to them (although Jews were more likely to marry inside their religion). Once Spain conquered the "New World" miscegenation took place in the Americas as well--between European Spaniards, the native population, and later, with the slaves they brought to replace them once most of them were killed off. By the way, the Moors also made pitstops throughout some other European countries, not just Spain--they were in France and Southern Italy as well--two other countries that contain "swarthy-looking" people.
Names indicating a mixed heritage are only common for people groups with a racially mixed background. There never were names for descendants of people of the same race but only different nationalities. In that case, you usually look at their father's nationality and call them either Italian or Spanish.
Those of mixed Spanish and Indian, or indigenous descent are called "Mestizos."
Mexicans
Mulato
Zambos
illustridos
Most of them look black mixed
Panamanians are Caribbean Spanish. In 2010, 65% were Mestizo which is mixed European and native.
Yes they can if they have African in them, if they are mixed black with spanish they are mulattos usually caramel color
Creoles are people of mixed European and African descent who were born in the Americas. Mestizos are people of mixed European and Indigenous American descent. Both terms are used to describe individuals of mixed heritage in different regions of the world.
Joe Jonas probably doesn't have a problem with mixed people, as all people are equal nor matter what they look like.
The nation of Ecuador is quite ethnically diverse. There is a mix of mestizo people along with mixed European from a Spanish background.