Grade 11 chemistry lab help please?! Limiting Reagent?

Haha fyi, limiting reactant and limiting reagent are interchangeable. But a good explanation for this would be that color is an intensive property (as opposed to extensive), meaning that the color of a substance is independent of the amount of the substance. You cannot determine the limiting reagent simply by color because there is no correlation between the amount of the substance and the color it has. The shade, however, may vary depending on the concentration (which is extensive), but it's all the same color. Hope this helps!