I found a good website explaining how to match exterior color and interior trim codes. The example is from a Grand Cherokee, but Liberties will be similar.

http://ecautosalvage.com/how-to-find-paint-codes-and-interior-trim-codes-on-your-jeep-grand-cherokee/

I used the information on this site to ID the right color codes for my interior trim, and then purchased matching seat belt bolt covers from one of the Mopar parts websites. I accidentally broke those trim pieces while installing a heated seat kit, so I was glad to be able to find a perfect match.

I figured this info might help someone!

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2008 Liberty Sport 4x4 Automatic

Jeepin By Al 4" Lift Kit
BFG KO2’s 245/75R16
Full MOPAR skid plates
Rock Lizard Skink Super Sliders
AtTheHelm Front Recovery System & Roof Rack
M116A3 Trailer build thread: viewtopic.php?f=72&t=77997