I disagree. All that's needed for color, beyond that needed for B&W, is color filters (in the enlarger or as a separate filter set), color chemicals, and of course color paper. There are additional color-printing tools available (drums instead of trays, color analyzers, color viewing filters [which are distinct from color printing filters], etc.); however, these things are optional extras, not necessities. Some people, myself included, even prefer developing color prints in trays rather than in the drums that are more commonly used in home darkrooms for this purpose.
Originally Posted by Martin Aislabie