Quick post to point out that every spec always had the same combo of race/gender/color.
(I hid the list in tags in another post, but I think it deserves its own proper post)
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Guardian is portrayed by a human guys.
Colors are the whole blue spectrum (it's all his, teals included).
Revenant is portrayed by sylvari guys (yes, the Herald is indeed a really buff sylvari, look at his face. Yes, I wish we had those options in-game. Yes, we were robbed.).
Colors are pretty varied, but always lots of tinted grays and muted tones (vaguely tied to the specializations), along with reddish/brownish accents like the profession's icon.
Warrior is potrayed by norn guys.
Colors are in the gold, ocher and beige (if it reads as yellow/orange, it's warrior).
Engineer is portrayed by charr guys.
Colors are always browns with (a confusing amount of) specialization-specific accents.
Ranger is portrayed by sylvari gals.
Colors are a whole lot of greens with browns as accents (if it screams nature, it's ranger).
Thief is portrayed by human guys (they get two cakes smh).
Colors aren't that consistent, but are always dark shades with reddish accents (Specter is kind of the exception, but it might be intentional because he's gotta be his own kind of violet edgy idk).
Elementalist is portrayed by human gals.
Colors are pretty mixed and portray at least a couple of elements, though always with a lot of red hues (if it has too many colors, it's ele).
Mesmer is portrayed by norn gals (humans got four cakes total).
[Later edit: the Troubadour trailer had a norn-exclusive hairstyle, so this is no longer a human gal in my book]
Colors are purples, violets and pinks.
Necromancer is portrayed by asura guys.
Colors are emerald greens and blacks (if it screams edgy, it's necro).