Which of the following is NOT typically considered a concern in Filipino architectural superstitions?

The selection of the option regarding the color of the sidewalk as a concern in Filipino architectural superstitions is appropriate because it does not commonly reflect the traditional beliefs and practices that influence architecture in Filipino culture.

Filipino architectural superstitions are often centered around beliefs related to optimizing energy, ensuring safety, and fostering harmony in the home. The direction of main doors is significant because it is thought to affect the flow of good fortune and prosperity. Similarly, timing for construction is important due to lunar phases, which are believed to influence the success of building projects. The placement of the bedroom also holds cultural significance, often connected to notions of health, well-being, and favorable energy flow.

In contrast, while the color of a sidewalk can provoke aesthetic considerations, it is not typically associated with the core beliefs and superstitions that inform decisions about architecture and design. Consequently, the color of the sidewalk is less likely to be emphasized within the context of Filipino architectural superstitions compared to the other aspects presented in the question.