I'm interested in knowing how different colours a tiefling's skin may can be, with official backing. By official backing, I mean, there are plenty of fan-images out there of tieflings of all sorts of colours, but I'm primarily interested in official art for any edition of D&D, and better yet, such skin colours explicitly stated in the text.
Typically, as I pointed out in my previous question, tieflings (in 5e, at least) have either "human skin colour", red skin, or somewhere in between.
From the 5e Tiefling player race description, Infernal Bloodline section (PHB, p. 42):
Their skin tones cover the full range of human coloration, but also include various shades of red.
Examples of other colours (all non-5e references come from this answer):
- Blue skin: In 2e, The Planewalker's Handbook, p. 80, blue skin is an option. In 3e, Races of Faerun, pp. 125-126, blue skin is attributed to having night hag heritage. In 5e, Sword Coast Adventurer's Guide, p. 118 mentions this in the Tiefling Variants sidebar ("red or dark blue skin").
- Green skin: In 2e, The Planewalker's Handbook, p. 80, green skin is an option.
- Purple skin: In 5e, the main art for the Tiefling player race is purple (thanks @Guybrush McKenzie), although given that this is on the same page of the PHB as the first quote above, and it is a rather reddish-purple (as opposed to a more blueish-purple), it may be argued that it counts as a "shade of red"?
- Honourable mention to the ivory white tiefling, although there's Q&A that concludes that it counts as a "human skin tone", so that may not count here: Can a tiefling have permanent ivory white skin?
Are there any other tiefling skin colours, either shown in official art or, better yet, mentioned in any official text? I'm not considering novels, only rulebooks and lorebooks. Also, ideally, I'd like images to be backed up by text (hence, are there any mentions in any text of the purple tiefling, for which I only have a picture to infer that it is possible?) where such text exists.
It would be great if answers could include lore explanations for each skin colour, as per my previous question, but since that had a whole question just for blue skin, I'm going to consider that a "nice to have" rather than a hard requirement for answers, lest this become too broad (but it would save me asking "what's the lore behind green?", "what's the lore behind purple?", etc).
Best Answer
Your question notes many sources accounting for tieflings with normal human skin tones as well as red, blue, and green tones, which covers most possible skin tones. I'm aware of the following other instances:
Pale white
In the D&D 3e Lords of Darkness, p. 107, Kleb has pale white skin. I get the sense that this means actual white like paper, as opposed to the pink human skin tone we call "white". His exact ancestry is unspecified, and I think there's an assumption that pre-4e tieflings of extraplanar origin have mysterious and varied ancestry that can allow for a great variety of skin tones and unique traits.
Translucent
In the D&D 3e Lords of Darkness, p. 107, Rekart has nearly transparent skin on his head, such that his skull is visible. His exact ancestry is unspecified.
Purple, yellow, pink
According to this answer on your other question, Explorer's Guide to Wildemount describes tieflings having skin of "deep crimson ... shades of purple, blue, green, and even yellow and pink". Since this is a first-party WotC official D&D sourcebook, it's technically a precedent for purple, yellow, and pink tieflings in D&D.