Well... looking at my Thinkpad the closest color would be a very, very dark version of RCJ. It's more of a dark purple than blue, but since SP doesn't seem to have anything purple I agree that BFR is probably the closest they have, assuming that fssbzz's picture of the color samples is white balanced properly.
Also, the layout of the "<--' Enter" is only on the Thinkpad keyboard. The regular Lenovo USB keyboard has a different text layout.
Thinkpad:
<--' Enter
IBM/Lenovo desktop keyboard:
Enter
<--'
This site has a picture of the Lenovo keyboard I also have:
http://ma.wishmesh.com/2011/02/ibm-lenovo-usb-prefered-pro-keyboard-unboxing-images/His pictures may be over exposed or over saturated. The purple isn't that bright on mine, it's more dull and dark. Or maybe it does look that bright under direct sunlight.
I'm partial to the Thinkpad layout, which is the same as the Round 1 double shots, except on the round 1 doubleshots, there is no space between the arrow and Enter, whereas there is a noticable space between the arrow and Enter on a Thinkpad Enter.
Round 1 Doubleshot:
<--'Enter
Thinkpad:
<--' Enter
http://www.thinkpads.com/2009/08/31/finally-photos-of-new-thinkpad-usb-trackpoint-keyboard/The extra space between the arrow and the text would be nice because it looks a bit bunched up on the Round 1 DS Enter key. Regardless, I'm already in for 2.