它们可以是黑色，红色，白色，绿色或黄褐色的。

They can be black, red, white, green or tan colored.

youdao

皮肤被毛必须为一个完整的颜色，但可以有相同颜色的色调变化，可以为黑色、深色或浅灰色，或银白色，浅黄褐色或奶油色。

The coat must be of one over-all color at the skin but may be of varying shades of the same color in the full coat, which may be black, blue, dark or light grey, silver platinum, fawn or cream.

youdao