A coating's color is not a complete description of its tested properties. Product-specific ratings and application requirements are more informative than a general label such as cool roof. Building conditions also affect the practical result.
What to do next
Request the exact product data and distinguish appearance from measured surface properties. Avoid treating a published product rating as a guaranteed building-wide saving. Evaluate the roof's condition and suitability independently from its intended color.
Related Perkins guidance
Contact Perkins Roofing to discuss your roof and the appropriate next step.