The old lady looked a little off colour.

这老太太看起来气色不佳.

《简明英汉词典》

You are off colour, you'd better take a rest.

你气色不好, 休息一下吧.

《简明英汉词典》

You are off colour.

你气色不好.

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The gem is off colour.

这块宝石色泽不佳.

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He is feeling rather off colour this morning.

今天早上他觉得身体有点不舒服.

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She has been off colour recently.

她最近气色一直不好.

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That carpet is somewhat off colour.

那木匠身体不舒服.

《简明英汉词典》

The jokes he told were quite off colour.

他说的笑话很下流.

《现代汉英综合大词典》

You look a little off colour today.

你今天气色不太好.

期刊摘选