It seems that this is how armor sets are going to work for the forseeable future. Tank heavy armor has it's own look. MNK/BRD/DRG will have 2 different armor designs and 2 of the jobs will share 1 of the designs and swap colors. Then the caster/healer set will be the same design but color swapped and the healer set seems to gravitate towards always being white.

And of course. All of these are undyeable.