These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Unfortunate Implications: The 2009 revival of the musical on Broadway had the Sharks singing and speaking in Spanish when among themselves — which adds to the realism, right? Except... that the most popular number that the Sharks sing, "America," is still sung totally in English, and the song "Un Hombre Asi/A Boy Like That" starts out in Spanish when Anita is singing of her hatred and desire for vengeance, and then turns to English when Maria sings about love, forgiveness, and self-sacrifice.
What Do You Mean, It's Not Symbolic?: The virginal Maria wears a white dress to her first dance, but a red one following the loss of her virginity to Tony. Also, in the final scenes, she's wearing a black shawl around her head. Probably representing her mourning for her brother, but it comes in handy when she has to mourn Tony as well.