silver还是silvery

我的理解是silver比silvery使用更为普遍，两个在表示颜色时，都是形容词，基本可以互换。经谷歌查询， hair is silver的使用率远高于hair is silvery.

针对网友提到的silvery作表语的用法的疑问，特以谷歌提供的例句作为依据如下：

1. His hair is silvery, his beard somewhat long and straggling, and of a silky whiteness.

2. In Africa the wolf attains a larger size than in Europe: its hair is silvery, and almost white.

3. Though our work is only forty years old yet her hair is silvery!

4. His complexion is fresh, his whiskers are gray and worn in the English fashion, his hair is silvery, his head well-shaped, his eyes gray and keen, and the tout ensemble that of a very pronounced Scotchman.

5. He describes his stomach as "corporation type," his hair is silvery, his cheeks are pink, and in repose his face has the look of a middle-aged cherub.

6. Her hair is silvery, long and flowing in the unfelt wind.

使用silver作表语修饰hair的句子更多，因此这里特作省略。