I've looked into this a fair bit because the premise is so grounded. 'Rainbow City' isn't presented as or officially based on a specific, documented true story. The author hasn't done any interviews claiming it's a direct retelling of real events. However, the power of the novel comes from how it feels true. The depiction of the city's stratified social layers, the grind of the characters' daily lives, and the small, desperate hopes that flicker in the shadows all ring incredibly authentic.
It reads like a collage of real human experiences rather than a single biography. You can feel the author's deep research into urban sociology and their clear observation of human behavior. The central conflict around the housing project and the community's fight feels pulled from countless news headlines. So, while it's not a 'true story' in the strictest sense, it's built from a foundation of emotional and social truth that makes it hit harder than many purely fictional works. That authenticity is what stays with you long after finishing the last page.