6 sentences for 天色 (tiān​sè — sky appearance)

1. 天色阴沉，看样子要下雨了。

   tiān​sè yīn​chén, kàn​yàng​zi yào xià​yǔ le.

   The sky is overcast; it looks like it's going to rain.

   Source: Dong Chinese Dictionary

2. 天色灰暗，看起来要下雨了。

   tiān​sè huī'àn, kàn qi​lai yào xià​yǔ le.

   The sky is dark; it looks like it's going to rain.

   Source: Dong Chinese Dictionary

3. 太阳下山后，天色渐渐变暗了。

   tài​yang xià​shān hòu, tiān​sè jiàn​jiàn biàn àn le.

   After the sun set, the sky gradually darkened.

   Source: Dong Chinese Dictionary

4. 天色渐暗，路灯也陆续亮了起来。

   tiān​sè jiàn àn, lù​dēng yě lù​xù liàng le qi​lai.

   As it grew dark, the streetlights began to come on one after another.

   Source: Dong Chinese Dictionary

5. 天色已昏，远处的人影渐渐看不清了。

   tiān​sè yǐ hūn, yuǎn​chù de rén​yǐng jiàn​jiàn kàn​bu​qīng le.

   It was already getting dark, and the figures in the distance were becoming blurred.

   Source: Dong Chinese Dictionary

6. 外面的大雨已经下个不停，天色也越来越暗了。

   wài​miàn de dà​yǔ yǐ​jīng xià gè bù​tíng, tiān​sè yě yuè​lái​yuè àn le.

   The heavy rain outside hasn't stopped, and the sky is getting darker and darker.

   Source: Dong Chinese Dictionary