A suffusion of yellow
Also, mine are German, not Scottish.
yeah Ive never understood the Scottish dwarf thing, they make more sense being not just German but Bavarian. Grimms Snow White and the 7 Zwerges is a Bavarian folktale.
Dwarfs are adapted to living in alpine caverns, but some dwarf clans act as Holzsammler who gather timber and other resources from the surface. Dwarfs do in fact suffer when visiting lower altitudes, but their high endurance means they can cope but often appear sullen and unhappy when outside their mountain homes.
There are different layers of darkness, and darkvision works by picking up the ambient light from stars or lingering in quartz crystals (Dwarfs call this grey dark). For deeper darkness, dwarfs still carry lanterns because there is no ambient light for their darkvision to pick up, and in the even deeper caverns there is True darkness that crowds in on you, torches are used to keep it at bay. Going deeper than that is the place of madness (and Derro).
Dwarfs skin is the colour and texture of granite (grey with black & white & pink flecks. Red granite indicates Azer heirtage, while Druegar are Dark granite). Dwarfs also use a lot of stone based metaphors, such as the word Talc being pejorative “Elves are soft as Talc”
Dwarf beards are worn by males and females, their bodies tend to be quite hirsuite overall and the colours and braiding indicate clan and status. (I like the idea of beards being sensitive whiskers that give dwarfs information about their environment, am going to steal that)