If the snow in winter was red instead of white, that’d be a strange change wouldn’t you say? White snow is normal, red would just be strange. Can you imagine what it would be like if the winter snow changed to the color of red?
You know what else is a strange thing to change? The color of a hen (へん). Hens are already red, so we’d change them to another color, like purple. That would be a pretty strange color for a hen, right?