Another theme might be the power of the human spirit. Despite being blind, the protagonist could show great courage and strength, which would be a central theme. Also, the theme of adaptation could be present as the blind person has to adapt to their condition and find new ways to do things.
One possible theme could be perseverance. If it's about a blind person, they would have to persevere through the difficulties of living without sight.
One possible theme is resilience. Despite being blind, the girl can keep going and face life's challenges bravely.
Another theme might be self - discovery. Through their blind love, the characters could learn more about themselves, their desires, and their capacity for love. They may find out things they never knew about themselves while being in this intense relationship. Also, the theme of risk - taking could be present. Since it's a blind love, they are taking risks by getting involved with someone without fully knowing them, and this could lead to either great rewards or painful consequences.
One possible theme is acceptance. Since it's a blind love story, it could be about accepting someone despite their flaws or differences. Another theme might be hope. If one of the characters is blind, their love story could represent hope for a fulfilling life in spite of their disability.
One possible theme could be 'overcoming adversity'. The blind girl has to face the challenges of her blindness, and if she changes in a positive way, it shows her ability to overcome those difficulties.
One possible theme could be acceptance. The girl has to accept her color blindness and find ways to live with it.
One possible theme is the power of love to overcome obstacles. Since the girl is blind, love can help her face the difficulties in life.
One possible theme could be resilience. The blind eskimo kid would have to be very resilient in the face of his disability in a harsh Arctic environment.
One possible theme could be the naivete of love. Since love is blind, it might show how people can be naive in love, and the tangerine could be a symbol of that simplicity. Another theme could be the unexpectedness of love, like how a tangerine, which is a simple object, can be related to the complex concept of love.
One possible theme could be perseverance. The blind boy may face difficulties in using signs, but he keeps trying.
Another theme might be about overcoming obstacles. Despite being blind, the girl can still have a wonderful birthday, highlighting that disabilities don't have to stop one from enjoying life's special moments. For example, she might find ways to participate in birthday games or activities in a different way than sighted people. She could use her other senses more acutely to have fun and create memories.