its a transition metal not a color......transition because it shows different valence states under different conditions
Nickel is a metallic and silver-ish color, just like the US coin, the nickel (worth 5 cents).
The color of a US nickel is silverish. US nickels are actually made of 75% copper, but the silvery color of the remaining nickel 25% predominates.
The flame color for nickel sulfate is green. The green color is due to the presence of nickel ions in the compound.
Nickel-colored, which is a dull silvery color. The cladding is made of nickel and copper.
silver!
silver
The flame test for nickel produces a blue-green color flame.
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Nickel nitrate typically appears as a green crystalline solid.
A neon color, or purple
By observing other compounds. Nickel salts are often green; carbonates are ... well, pretty much any color, including colorless (white) for sodium carbonate (baking powder) or calcium carbonate (limestone, chalk).
the colour of nickel chloride is bluish green or greenish.