I am an English teacher in Japan. I hve come accross the question of usage of "a pair of" with adjectives.
For example, we say: "I bought a new pair of shoes", "I got a new pair of black socks", and "That's a nice pair of glasses". But, is it correct to say: "I bought a pair of new shoes", "I got a new black pair of socks", "I got a black pair of socks", and "That's a pair of nice glasses". I know that the last sentences do not sound too good, and that for starters there is a matter of the adjective modifying either the word "pair" or the noun after "a apair of". However, are there any kind of rules for this??
The reason I say no rule, however, is that there is some variation in these pairs. You can have only one shoe from a pair of shoes, for instance, but you cannot have only one glass from a pair of glasses.
I see no real difference between a new pair of shoes and a pair of new shoes.
A nice pair of glasses seems to be the only way to say it.
I got a new black pair of socks-- this seems wrong, since the pair is new but the socks are black-- you should go with a new pair of black socks.