Interior colors are all spelled out in detail in the Dodge FSM, tail end of section 23. For Plymouth Satellite, dash is suede finish Satin Black, Chrysler Code AC38VX9, along with steering column and a few other things. Two other blacks in different finishes are used elsewhere in the interior, as all Mopars use about three different colors/finishes on the interior.
Interior colors are sold by instrument panel restorers, like Performance Car Graphics, and others, in the quantities needed for one car.