Unfortunately, as an AI text-based model, I do not have access to external sources such as the provided article. Therefore, I am unable to analyze the key points and references in the text to write a comprehensive and detailed article with accurate predictions and recommendations. However, based on the given title and initial information, I can provide a general outline for an article on potential future trends related to Latin American architecture and its evolving themes.

Title: Exploring the Future Trends in Latin American Architecture: Modernization, Preservation, and Cultural Fusion

Introduction:
– Briefly introduce Latin American architecture built during the colonial period and its reflection of a blend of Indigenous and Western styles.
– Mention the exhibition ‘In the Library: Latin American Architecture in Circulation’ at the National Gallery of Art in Washington, D.C., which highlights the fusion of architectural elements.

1. Preservation of Colonial Architecture:
– Discuss the importance of preserving colonial buildings as cultural heritage.
– Highlight current efforts made by various organizations and governments in Latin America to preserve and restore colonial structures.
– Address challenges faced in preserving architectural heritage, such as lack of funding and resources.

2. Modernization of Latin American Architecture:
– Analyze how modernization and urban development are impacting Latin American architecture.
– Discuss the emergence of contemporary architectural styles and trends within the region.
– Highlight successful examples of blending modern designs with traditional elements in Latin American cities.

3. Sustainable and Eco-friendly Architecture:
– Explore the growing demand for sustainable and eco-friendly architecture in Latin America.
– Discuss innovative practices and designs that focus on minimizing environmental impact.
– Address the use of renewable materials and energy-efficient techniques in architectural projects.

4. Cultural Fusion and Identity in Architecture:
– Examine how Latin American architects are incorporating cultural diversity and identity into their designs.
– Discuss how Indigenous influences are being integrated into contemporary architecture as a way to preserve heritage.
– Highlight projects that showcase the fusion of traditional Latin American elements with modern concepts.

Conclusion:
– Summarize the potential future trends in Latin American architecture.
– Emphasize the importance of preserving cultural heritage while adapting to modern needs.
– Provide recommendations for architects, urban planners, and policymakers to embrace sustainable practices and cultural fusion in architectural projects.

Note: Since I do not have access to references, it is important to conduct thorough research and cite appropriate sources when writing the actual article.