时尚新词：“信号灯派对”是什么？

A stoplight party is a party at which guests wear different colors indicating their relationship-seeking status.
“信号灯派对”指参加聚会的客人会穿不同颜色的衣服来显示他们的感情状况。

Usually, the color green means that one is single and looking for a relationship. Red means that one is currently in a relationship, or not looking for one. Yellow may mean "unsure" or "maybe," or could mean that one is in a relationship but still open to advances. The purpose of a stoplight party is to decrease the apprehension associated with approaching potential mates at parties. It also serves the purpose of providing an easy indicator of one's unavailability to fend off unwelcome advances.
通常来说，穿绿色衣服表示目前单身并且正在寻找恋爱对象。穿红色的衣服则表示正在恋爱中或者现在不想寻找伴侣。黄色的衣服表示“不确定”或者“有可能”，也可能表示这个人目前有交往对象但是并不否定跟别人发展的可能。“信号灯派对”的目的减少客人们在派对上接近潜在目标时的顾虑。同时，这种形式也可以明确显示每个人的感情状况，能够帮助那些名花有主的客人挡掉一些无谓的追求者。