I have an NC 700 soapstone Bose headphones. My cushions have, unfortunately, worn down. Is it possible that I buy other colors for the cushion (ie, black, silver, triple midnight), and still fit it on my soapstone headphones? I just want to confirm that these cushions are all of the same dimensions such that each cushion, regardless of its color, would fit into any NC 700 Bose headphones. Thank you in advance!