David; My rocker panels were line-x'd about a year ago, dark gray color seems about the same as when new. I agree with Steve's comments regarding the quality of the job done by the shop. Remember, that's where your warranty will probably come from. I'm very satisfied with the work line-x of St. Louis did. Had a couple of friends who've had their trucks done since mine. All are happy customers. Good Luck! Steve W.
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2001 2500 4x4LB,6-speed,HO engine,SLT,towing mirrors,Med. Bronze W/Dark Charcoal Line-x bedliner and rocker panels,CB,Banks EGT/Boost pillar mounted guages,Jacobs E-brake,etc.