What is a common cause of grout color inconsistency during application?

A common cause of grout color inconsistency during application is inadequate mixing or an improper water-to-grout ratio. When grout is not mixed thoroughly, the consistency of the mixture can vary, leading to areas that may appear lighter or darker once cured. Additionally, if the water-to-grout ratio is not correctly measured, it can affect the hydration of the grout, resulting in inconsistent setting and color across different application areas. Maintaining the correct proportions and ensuring thorough mixing are crucial for achieving a uniform color in the finished grout.