This www-site will quickly covert NCS to RGB for you
http://jsfiddle.net/jdias/b3hEa/
then you can just use the three RGB values it gives you in the SKP's material-editor to make a new material to match...
It would be easy enough to incorporate this code into a webdialog and then make the color for you...
Perhaps some brave scripter might have the time to do it [one day]...