Yes, strawberry red is an original color (DB 543). I saw a full size sedan 300d of the late fifties painted such, with the documentation to prove it. Quite a knock out. A friend of mine is restoring a 300 SL roadster and the original color is Uranium Yellow DB 662, and he has the documentation to prove it is correct. It will be stunning.
Wonder if it is the same car as the one feature in MB Enthusiast (Dec 2013)? The MB Enthusiast cover car, is not the original color. This car was restored at Hjeltness Restoration here in Escondido, and the owner wanted it in DB 543, it was originally DB 180.