What each letter in Roy G. Biv represents

COLOR

Think of the sequence that appears after rain when sunlight splits—each one is a distinct shade in this natural spectrum.

"Roy G. Biv" is a mnemonic for the sequence of colors in a rainbow: red, orange, yellow, green, blue, indigo, and violet. The clue asks what each letter stands for, and since they all represent different hues, the answer is simply "color." It’s a straightforward reference to the acronym’s purpose—helping people remember the order of rainbow colors.