Science Experiment Process

Question: Please Help! I need info on the melting process of Skittles!!?
Okay I have done this experiment for Science and I have placed 5 of the Originial Fruit Skittle colors in the microwave. The results were that orange melted the fastes, then yellow, green, purple, and finally red. So before I did the experiment, I guessed that yellow would melt faster becuase of the coloring is lighter but now I need to know other reasons to back up why i chose yellow. Please help me I need it!
Answer: I would think coloring would have nothing to do with it. Probably more the relatively density of that particular skittle. I bet they taste good melted.
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