Information from the data plate
Description  | 
    Description  | 
  ||||
|---|---|---|---|---|---|
STD  | 
    Standard equipment  | 
    552[x]AA  | 
    Gray, two-tone  | 
    none  | 
    N/A  | 
  
(Click on a heading in the table for more information on that item.)
The paint code appears to be missing a digit, and Steve Spilatro's work on FC paint code Exception Control Letters suggests that it's the final digit, meaning that the vehicle had a solid-color paint scheme.