You can get a price match from
Nordstrom Rack, but you need to submit it to their corporate office with a copy of your receipt(s) and the item which you wish to match.
You NEED to purchase the item in order to get the difference refunded to you, they will send you a gift card for the amount.
However, they will not match things of a different color, different colors go on sale at different times - The item you are matching has to be the exact same thing.
Honestly though, if it is less than $50.00 savings, it really would not be worth the hassle.