I'd like to buy some socks in dark color.

我想买些深颜色的袜子。

youdao

OK, I'll buy two pairs of each color. And do you have sports socks?

每种颜色给我来一双，你有运动袜吗？

youdao

Otherwise, pick the third sock. Now the first two socks already cover both color cases. The third sock must be one of those and form a matching pair.

否则，我们在再挑选出一只袜子，我们原先挑出的袜子已经有了两种不同的颜色，第三只袜子的颜色必是其中的一种，这样，我们就挑选出了一双颜色相同的袜子。

youdao

What color are your socks today?

WHITEHOUSE: Press Briefing

What color are your socks?

WHITEHOUSE: Press Briefing

Among the no-no's: more than three color shades in an outfit, white socks with black shoes, and pajamas and slippers in public.

WSJ: For Beijing, Etiquette Isn't a Game