One common theme is the transformation of America's character. The glasses can be used as a symbol of a more studious or serious side of him. For example, he might be depicted as being more focused on diplomatic affairs when wearing glasses.
Often, there are themes related to relationships. The glasses can add an element of allure or a different aesthetic that attracts other characters. It could be a romantic relationship, like with another nation in the Hetalia universe, and the glasses play a part in the initial attraction or the development of the relationship.
Another theme is the contrast between America's normal self and his 'glasses - wearing self'. This can create humorous situations. For instance, his friends might be surprised by his new, more intellectual - looking appearance with the glasses, and there could be comical misunderstandings or reactions from those around him.
One common theme is friendship. It shows how America and the South American countries can form strong bonds in the Hetalia universe. Another is cultural exploration, as it delves into the unique cultures of South America from the perspective of Hetalia.
One common theme could be a change in appearance leading to a different perception of America. For example, the glasses might make him seem more studious or intellectual.
Well, you can try looking on Archive of Our Own (AO3). There are often many Hetalia - related fanfics there. Just search for 'america hetalia glasses' in the search bar, and you'll likely find some interesting ones. It might take some time to sift through them to find the really good ones though.
Cultural exchange is another theme. Since America has a rich and diverse culture, and Tony may have his own unique cultural background, fanfictions often show how they share and learn from each other's cultures, which can lead to some really interesting and educational moments in the stories.
One common theme is the exploration of gender roles. Since it's a female version of America, it often looks at how she might handle things differently compared to the male version in terms of leadership and international relations.
One common theme is cultural clash. Since America and England have different cultures, it's often explored how they deal with each other's traditions in a domestic setting. For instance, holidays and food preferences.
One common theme is the struggle with self - image. In these fanfictions, America might be shown as pressured by the standards of beauty or strength in the Hetalia world. For example, he could feel the need to look a certain way to be seen as a powerful nation. Another theme could be the impact on relationships. His eating disorder might cause strain on his friendships with other nations like England or France, who may notice his change in behavior but not fully understand it at first.
Friendship is a big theme. Despite their differences, the characters usually end up forming strong bonds. They learn from each other and support one another in facing various challenges. Another theme is the exploration of power. Captain America has his super - soldier abilities, and the Hetalia characters have their own skills and influence. How they combine their powers or deal with differences in power is often a part of the story.
Family is a common theme. Since America and Canada are often depicted as brothers in Hetalia, fanfictions explore their sibling relationship, like how they argue and make up.
One common theme is brotherly love. Since America and Canada are siblings in Hetalia, in these baby - themed fanfictions, they often show a pure form of brotherly affection.