It is a common misconception that the color red is supposed to upset the bull, despite the fact bulls are colorblind (the real reason is that any blood stains on it will be less noticeable).

• 大家以为红色可以激怒牛，事实上，公牛是色盲（真正的原因是，它沾上血迹会较不明显；我猜这也是牛选黑色，而不是其他颜色的原因）。