Metal is Dark: No Bright Gold

A set of dark-toned Art Nouveau metals. Wrought iron is deep charcoal with dark green oxidation; copper and brass are oxidized to deep brown with a greenish tint, not bright gold; occasionally, some silver-plated parts are also matte. These metals almost blend into the background of dark wood and green walls, with only their edges catching a faint reflection from the light.
Avoid: using polished bright gold and chrome, adding large areas of gold decoration, using metals with an obvious electroplated feel, letting metal be the brightest thing in the image.

Translated from Chinese by AI.

一組色調沉暗的新藝術金屬。鍛鐵是深炭色帶暗綠的氧化色;銅與黃銅已經氧化成深褐帶青,不是明亮的金;偶爾有一點鍍銀的部分也是霧面的。這些金屬在深色木與綠色牆面的背景上幾乎融進去,只有邊緣被光帶出一道暗淡的反光。避免:使用拋光的亮金與鍍鉻、加入大面積的金色裝飾、使用電鍍感明顯的金屬、讓金屬成為畫面裡最亮的東西。