They may look white, but they are supposed to be Latino* - at least that is what the movie producers and directors tried to do when these movies were made. Turner Classic Movies will be showing a series of movies featuring Latino "characters" in the month of May. Take a look, maybe you'll find someone that looks like your grandmother.
link to images above
If you want to learn more about Latino representation in the movies, read The Ethnic Eye by Professor Chon Noriega * Just to let you know, there are a significant number of "Latinos" who look white or are white. We come in all colors. The trouble with the "white" Latino actors, is that this type of representation encourages our negativity against dark skinned people.