Originally Posted by Airscape
I do not think there is a proper paint code for the interior silver (that has been found) could be wrong though.
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He used Duplicolor Charcoal Silver and it looks like a pretty good match (was spray obviously not a touch up, but I assume they would have the same color in multiple styles)
I have used a spray, on a piece of cardboard, as an artists' palette. Dip your little brush in the puddle you make on the cardboard.
Works in a pinch! And is better than nothing.