I show paint code 38 to be a BG, dark blue color, but used in combo with silver(code 33).
Dark Blue Metallic is a St. Louis code 28.
The "recommended" interior color for the BG Dark blue/silver was dark blue, with silver available.
The "recommended" interior colors for the code 28 Dark Blue Metallic were red, dark blue, silver, or camel.
Now...ANY color combo could be had, even if it was not on the "recommended" interior color list for '81 cars, if it was available at the time. I'd say get a look at the trim tag, and see what the interior color code actually is.

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Joel Adams
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