My 83' 300D is the very deep midnite blue, with a palamino tan MB-tex interior in almost mint condition (minor split on the seam of the armrest) professionally blue tinted windows, and recently soda blasted & polished light-alloy wheels. (Im planning to clear powder coat them so they stay this nice) This car is exactly what you described. Problem is ... its up in Canada now (formerly from Santa Barbara Ca.)
I'm proud of the condition and appearance of my car, and am pleased to hear that someone else likes this colour a lot, too.
What colour and details can you provide about your 84' ?