在阳光下晒了几天后，他的皮肤变成了深古铜色。

After days in the sun, his skin acquired a deep ___bronze tan.

艺术家使用了丰富的调色板，包括古铜色、金色和铜色。

The artist used a palette of rich colours, including ___bronze, gold, and copper.

老照片已经褪色成柔和的古铜色调。

The old photograph had faded to a soft ___bronze hue.